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    <link:label id="lab_us-gaap_LetterOfCreditMember_924C6B6BEB37B0E832B92945216CECC9_label_en-US" xlink:label="lab_us-gaap_LetterOfCreditMember_924C6B6BEB37B0E832B92945216CECC9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Letter of Credit [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_LetterOfCreditMember" xlink:label="loc_us-gaap_LetterOfCreditMember_924C6B6BEB37B0E832B92945216CECC9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LetterOfCreditMember_924C6B6BEB37B0E832B92945216CECC9" xlink:to="lab_us-gaap_LetterOfCreditMember_924C6B6BEB37B0E832B92945216CECC9" xlink:type="arc" />
    <link:label id="lab_us-gaap_LongtermDebtTypeAxis_8FB25F822E2195742CE92945216CC672_terseLabel_en-US" xlink:label="lab_us-gaap_LongtermDebtTypeAxis_8FB25F822E2195742CE92945216CC672" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Long-term Debt, Type [Axis]</link:label>
    <link:label id="lab_us-gaap_LongtermDebtTypeAxis_8FB25F822E2195742CE92945216CC672_label_en-US" xlink:label="lab_us-gaap_LongtermDebtTypeAxis_8FB25F822E2195742CE92945216CC672" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-term Debt, Type [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_LongtermDebtTypeAxis" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_8FB25F822E2195742CE92945216CC672" xlink:type="locator" />
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    <link:label id="lab_us-gaap_LongtermDebtTypeDomain_E949DF79437420ED30152945216C00A6_terseLabel_en-US" xlink:label="lab_us-gaap_LongtermDebtTypeDomain_E949DF79437420ED30152945216C00A6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Long-term Debt, Type [Domain]</link:label>
    <link:label id="lab_us-gaap_LongtermDebtTypeDomain_E949DF79437420ED30152945216C00A6_label_en-US" xlink:label="lab_us-gaap_LongtermDebtTypeDomain_E949DF79437420ED30152945216C00A6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-term Debt, Type [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_E949DF79437420ED30152945216C00A6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_E949DF79437420ED30152945216C00A6" xlink:to="lab_us-gaap_LongtermDebtTypeDomain_E949DF79437420ED30152945216C00A6" xlink:type="arc" />
    <link:label id="lab_trs_SeniorSecuredTermLoanMember_BD22862AA4A8A685253A2945216C10FA_terseLabel_en-US" xlink:label="lab_trs_SeniorSecuredTermLoanMember_BD22862AA4A8A685253A2945216C10FA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Senior Secured Term Loan A [Member]</link:label>
    <link:label id="lab_trs_SeniorSecuredTermLoanMember_BD22862AA4A8A685253A2945216C10FA_label_en-US" xlink:label="lab_trs_SeniorSecuredTermLoanMember_BD22862AA4A8A685253A2945216C10FA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Senior Secured Term Loan A [Member]</link:label>
    <link:label id="lab_trs_SeniorSecuredTermLoanMember_BD22862AA4A8A685253A2945216C10FA_documentation_en-US" xlink:label="lab_trs_SeniorSecuredTermLoanMember_BD22862AA4A8A685253A2945216C10FA" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Senior Secured Term Loan A [Member]</link:label>
    <link:loc xlink:href="trs-20160630.xsd#trs_SeniorSecuredTermLoanMember" xlink:label="loc_trs_SeniorSecuredTermLoanMember_BD22862AA4A8A685253A2945216C10FA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_trs_SeniorSecuredTermLoanMember_BD22862AA4A8A685253A2945216C10FA" xlink:to="lab_trs_SeniorSecuredTermLoanMember_BD22862AA4A8A685253A2945216C10FA" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentAxis_48959645EB5A9EBE44FD2945216CBB5D_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentAxis_48959645EB5A9EBE44FD2945216CBB5D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt Instrument [Axis]</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentAxis_48959645EB5A9EBE44FD2945216CBB5D_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentAxis_48959645EB5A9EBE44FD2945216CBB5D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_DebtInstrumentAxis" xlink:label="loc_us-gaap_DebtInstrumentAxis_48959645EB5A9EBE44FD2945216CBB5D" xlink:type="locator" />
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    <link:label id="lab_us-gaap_DebtInstrumentNameDomain_23C9C59B4E2ABD21378B2945216C7206_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentNameDomain_23C9C59B4E2ABD21378B2945216C7206" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt Instrument, Name [Domain]</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentNameDomain_23C9C59B4E2ABD21378B2945216C7206_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentNameDomain_23C9C59B4E2ABD21378B2945216C7206" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Name [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_23C9C59B4E2ABD21378B2945216C7206" xlink:type="locator" />
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    <link:label id="lab_trs_USBankDebtAndReceivablesFacilityMember_D817DD55AD5268935B382945216CB16F_terseLabel_en-US" xlink:label="lab_trs_USBankDebtAndReceivablesFacilityMember_D817DD55AD5268935B382945216CB16F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">U.S. bank debt and receivables facility [Member]</link:label>
    <link:label id="lab_trs_USBankDebtAndReceivablesFacilityMember_D817DD55AD5268935B382945216CB16F_label_en-US" xlink:label="lab_trs_USBankDebtAndReceivablesFacilityMember_D817DD55AD5268935B382945216CB16F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">U.S. bank debt and receivables facility [Member]</link:label>
    <link:label id="lab_trs_USBankDebtAndReceivablesFacilityMember_D817DD55AD5268935B382945216CB16F_documentation_en-US" xlink:label="lab_trs_USBankDebtAndReceivablesFacilityMember_D817DD55AD5268935B382945216CB16F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Contractual arrangement with a lender under which borrowings can be made up to a specific amount at any point in time, and under which borrowings outstanding may be either short-term or long-term, depending upon the particulars, inside the reporting entity's home country; and, collateralized debt obligation backed by, for example, but not limited to, pledge, mortgage or other lien on the entity's assets.</link:label>
    <link:loc xlink:href="trs-20160630.xsd#trs_USBankDebtAndReceivablesFacilityMember" xlink:label="loc_trs_USBankDebtAndReceivablesFacilityMember_D817DD55AD5268935B382945216CB16F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_trs_USBankDebtAndReceivablesFacilityMember_D817DD55AD5268935B382945216CB16F" xlink:to="lab_trs_USBankDebtAndReceivablesFacilityMember_D817DD55AD5268935B382945216CB16F" xlink:type="arc" />
    <link:label id="lab_trs_RevolvingCreditAndTermLoanFacilitiesMember_0BCED809F6615E6DA7DB2945217C692E_terseLabel_en-US" xlink:label="lab_trs_RevolvingCreditAndTermLoanFacilitiesMember_0BCED809F6615E6DA7DB2945217C692E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Revolving credit and term loan facilities [Member]</link:label>
    <link:label id="lab_trs_RevolvingCreditAndTermLoanFacilitiesMember_0BCED809F6615E6DA7DB2945217C692E_label_en-US" xlink:label="lab_trs_RevolvingCreditAndTermLoanFacilitiesMember_0BCED809F6615E6DA7DB2945217C692E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revolving credit and term loan facilities [Member]</link:label>
    <link:label id="lab_trs_RevolvingCreditAndTermLoanFacilitiesMember_0BCED809F6615E6DA7DB2945217C692E_documentation_en-US" xlink:label="lab_trs_RevolvingCreditAndTermLoanFacilitiesMember_0BCED809F6615E6DA7DB2945217C692E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Debt arrangement in which loan proceeds can continuously be obtained following repayments, but the total amount borrowed cannot exceed a specified maximum amount; as well as debt instruments with maturities ranging from five to ten years.</link:label>
    <link:loc xlink:href="trs-20160630.xsd#trs_RevolvingCreditAndTermLoanFacilitiesMember" xlink:label="loc_trs_RevolvingCreditAndTermLoanFacilitiesMember_0BCED809F6615E6DA7DB2945217C692E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_trs_RevolvingCreditAndTermLoanFacilitiesMember_0BCED809F6615E6DA7DB2945217C692E" xlink:to="lab_trs_RevolvingCreditAndTermLoanFacilitiesMember_0BCED809F6615E6DA7DB2945217C692E" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentLineItems_5290DA2F70814AA98AE42945217CB2C4_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentLineItems_5290DA2F70814AA98AE42945217CB2C4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt Instrument [Line Items]</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentLineItems_5290DA2F70814AA98AE42945217CB2C4_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentLineItems_5290DA2F70814AA98AE42945217CB2C4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_DebtInstrumentLineItems" xlink:label="loc_us-gaap_DebtInstrumentLineItems_5290DA2F70814AA98AE42945217CB2C4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentLineItems_5290DA2F70814AA98AE42945217CB2C4" xlink:to="lab_us-gaap_DebtInstrumentLineItems_5290DA2F70814AA98AE42945217CB2C4" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentUnusedBorrowingCapacityAmount_5AF5F493E36E91527F7C2945217CFFC1_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentUnusedBorrowingCapacityAmount_5AF5F493E36E91527F7C2945217CFFC1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt Instrument, Unused Borrowing Capacity, Amount</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentUnusedBorrowingCapacityAmount_5AF5F493E36E91527F7C2945217CFFC1_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentUnusedBorrowingCapacityAmount_5AF5F493E36E91527F7C2945217CFFC1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Unused Borrowing Capacity, Amount</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_DebtInstrumentUnusedBorrowingCapacityAmount" xlink:label="loc_us-gaap_DebtInstrumentUnusedBorrowingCapacityAmount_5AF5F493E36E91527F7C2945217CFFC1" xlink:type="locator" />
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    <link:label id="lab_us-gaap_DebtInstrumentPeriodicPaymentPrincipal_1C062395B300429E5F622945217CE31F_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentPeriodicPaymentPrincipal_1C062395B300429E5F622945217CE31F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt Instrument, Periodic Payment, Principal</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentPeriodicPaymentPrincipal_1C062395B300429E5F622945217CE31F_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentPeriodicPaymentPrincipal_1C062395B300429E5F622945217CE31F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Periodic Payment, Principal</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_DebtInstrumentPeriodicPaymentPrincipal" xlink:label="loc_us-gaap_DebtInstrumentPeriodicPaymentPrincipal_1C062395B300429E5F622945217CE31F" xlink:type="locator" />
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    <link:label id="lab_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_88A568F94977CF9E517A2945217C9874_terseLabel_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_88A568F94977CF9E517A2945217C9874" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Line of Credit Facility, Maximum Borrowing Capacity</link:label>
    <link:label id="lab_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_88A568F94977CF9E517A2945217C9874_label_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_88A568F94977CF9E517A2945217C9874" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Line of Credit Facility, Maximum Borrowing Capacity</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_88A568F94977CF9E517A2945217C9874" xlink:type="locator" />
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    <link:label id="lab_us-gaap_PaymentsOfFinancingCosts_380439430FF0456E99582945217C9EC7_terseLabel_en-US" xlink:label="lab_us-gaap_PaymentsOfFinancingCosts_380439430FF0456E99582945217C9EC7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Payments of Financing Costs</link:label>
    <link:label id="lab_us-gaap_PaymentsOfFinancingCosts_380439430FF0456E99582945217C9EC7_label_en-US" xlink:label="lab_us-gaap_PaymentsOfFinancingCosts_380439430FF0456E99582945217C9EC7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments of Financing Costs</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_PaymentsOfFinancingCosts" xlink:label="loc_us-gaap_PaymentsOfFinancingCosts_380439430FF0456E99582945217C9EC7" xlink:type="locator" />
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    <link:label id="lab_us-gaap_DeferredFinanceCostsNoncurrentNet_F9AE9F83DBD72449396C2945217C2209_terseLabel_en-US" xlink:label="lab_us-gaap_DeferredFinanceCostsNoncurrentNet_F9AE9F83DBD72449396C2945217C2209" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Deferred Finance Costs, Noncurrent, Net</link:label>
    <link:label id="lab_us-gaap_DeferredFinanceCostsNoncurrentNet_F9AE9F83DBD72449396C2945217C2209_label_en-US" xlink:label="lab_us-gaap_DeferredFinanceCostsNoncurrentNet_F9AE9F83DBD72449396C2945217C2209" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Issuance Costs, Noncurrent, Net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_DeferredFinanceCostsNoncurrentNet" xlink:label="loc_us-gaap_DeferredFinanceCostsNoncurrentNet_F9AE9F83DBD72449396C2945217C2209" xlink:type="locator" />
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    <link:label id="lab_us-gaap_DebtRelatedCommitmentFeesAndDebtIssuanceCosts_DD3CAA0010367AB2B5B62945217C69BC_terseLabel_en-US" xlink:label="lab_us-gaap_DebtRelatedCommitmentFeesAndDebtIssuanceCosts_DD3CAA0010367AB2B5B62945217C69BC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt Related Commitment Fees and Debt Issuance Costs</link:label>
    <link:label id="lab_us-gaap_DebtRelatedCommitmentFeesAndDebtIssuanceCosts_DD3CAA0010367AB2B5B62945217C69BC_label_en-US" xlink:label="lab_us-gaap_DebtRelatedCommitmentFeesAndDebtIssuanceCosts_DD3CAA0010367AB2B5B62945217C69BC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Related Commitment Fees and Debt Issuance Costs</link:label>
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    <link:label id="lab_us-gaap_WriteOffOfDeferredDebtIssuanceCost_529D4D75B9762C4D4A192945217C4BDC_terseLabel_en-US" xlink:label="lab_us-gaap_WriteOffOfDeferredDebtIssuanceCost_529D4D75B9762C4D4A192945217C4BDC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Write off of Deferred Debt Issuance Cost</link:label>
    <link:label id="lab_us-gaap_WriteOffOfDeferredDebtIssuanceCost_529D4D75B9762C4D4A192945217C4BDC_label_en-US" xlink:label="lab_us-gaap_WriteOffOfDeferredDebtIssuanceCost_529D4D75B9762C4D4A192945217C4BDC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Write off of Deferred Debt Issuance Cost</link:label>
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    <link:label id="lab_us-gaap_LineOfCreditFacilityCapacityAvailableForSpecificPurposeOtherThanForTradePurchases_D09201B49A0738BF9C612945217C7E74_terseLabel_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityCapacityAvailableForSpecificPurposeOtherThanForTradePurchases_D09201B49A0738BF9C612945217C7E74" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Revolving Credit Facility, Capacity Available for Foreign Revolver Loans</link:label>
    <link:label id="lab_us-gaap_LineOfCreditFacilityCapacityAvailableForSpecificPurposeOtherThanForTradePurchases_D09201B49A0738BF9C612945217C7E74_label_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityCapacityAvailableForSpecificPurposeOtherThanForTradePurchases_D09201B49A0738BF9C612945217C7E74" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Line of Credit Facility, Capacity Available for Specific Purpose Other than for Trade Purchases</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_LineOfCreditFacilityCapacityAvailableForSpecificPurposeOtherThanForTradePurchases" xlink:label="loc_us-gaap_LineOfCreditFacilityCapacityAvailableForSpecificPurposeOtherThanForTradePurchases_D09201B49A0738BF9C612945217C7E74" xlink:type="locator" />
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    <link:label id="lab_us-gaap_DebtInstrumentMaturityDate_961C25470588168C777A2945217CD8BD_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentMaturityDate_961C25470588168C777A2945217CD8BD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt Instrument, Maturity Date</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentMaturityDate_961C25470588168C777A2945217CD8BD_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentMaturityDate_961C25470588168C777A2945217CD8BD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Maturity Date</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_DebtInstrumentMaturityDate" xlink:label="loc_us-gaap_DebtInstrumentMaturityDate_961C25470588168C777A2945217CD8BD" xlink:type="locator" />
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    <link:label id="lab_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_895A6461AEBD4FA8E58A2945217C278E_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_895A6461AEBD4FA8E58A2945217C278E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Basis Spread on Variable Rate</link:label>
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    <link:label id="lab_us-gaap_DebtInstrumentFaceAmount_42AC3431810E5E7C14242945217C96EF_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentFaceAmount_42AC3431810E5E7C14242945217C96EF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Face Amount</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_DebtInstrumentFaceAmount" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_42AC3431810E5E7C14242945217C96EF" xlink:type="locator" />
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    <link:label id="lab_trs_IncrementalDebtCommitmentsCapacity_9C125B6F1ACAE4A1A4142945217CA0AF_terseLabel_en-US" xlink:label="lab_trs_IncrementalDebtCommitmentsCapacity_9C125B6F1ACAE4A1A4142945217CA0AF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Incremental debt commitments capacity</link:label>
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    <link:loc xlink:href="trs-20160630.xsd#trs_IncrementalDebtCommitmentsCapacity" xlink:label="loc_trs_IncrementalDebtCommitmentsCapacity_9C125B6F1ACAE4A1A4142945217CA0AF" xlink:type="locator" />
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    <link:label id="lab_trs_NetLeverageRatio_8D40A64B00CA26EF60122945217C4E53_terseLabel_en-US" xlink:label="lab_trs_NetLeverageRatio_8D40A64B00CA26EF60122945217C4E53" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net leverage ratio</link:label>
    <link:label id="lab_trs_NetLeverageRatio_8D40A64B00CA26EF60122945217C4E53_label_en-US" xlink:label="lab_trs_NetLeverageRatio_8D40A64B00CA26EF60122945217C4E53" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net leverage ratio</link:label>
    <link:label id="lab_trs_NetLeverageRatio_8D40A64B00CA26EF60122945217C4E53_documentation_en-US" xlink:label="lab_trs_NetLeverageRatio_8D40A64B00CA26EF60122945217C4E53" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Net leverage ratio, as defined</link:label>
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    <link:label id="lab_trs_RequiredprepaymentsundertermloanAfacility_1CEF481B17DFCA6C61342945217CA19D_terseLabel_en-US" xlink:label="lab_trs_RequiredprepaymentsundertermloanAfacility_1CEF481B17DFCA6C61342945217CA19D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Required prepayments under term loan A facility</link:label>
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    <link:label id="lab_trs_LetterOfCreditMaximumBorrowingCapacity_49BB21E6F2934D273DA92945217C813E_terseLabel_en-US" xlink:label="lab_trs_LetterOfCreditMaximumBorrowingCapacity_49BB21E6F2934D273DA92945217C813E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Letters of Credit, Maximum Borrowing Capacity</link:label>
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    <link:label id="lab_trs_LetterOfCreditMaximumBorrowingCapacity_49BB21E6F2934D273DA92945217C813E_documentation_en-US" xlink:label="lab_trs_LetterOfCreditMaximumBorrowingCapacity_49BB21E6F2934D273DA92945217C813E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Maximum borrowing capacity under the letters of credit.</link:label>
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    <link:label id="lab_us-gaap_LineOfCredit_882C479EF9639F4E11F72945217CEB2D_terseLabel_en-US" xlink:label="lab_us-gaap_LineOfCredit_882C479EF9639F4E11F72945217CEB2D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Revolving Credit Facility, Amount Outstanding</link:label>
    <link:label id="lab_us-gaap_LineOfCredit_882C479EF9639F4E11F72945217CEB2D_label_en-US" xlink:label="lab_us-gaap_LineOfCredit_882C479EF9639F4E11F72945217CEB2D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-term Line of Credit</link:label>
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    <link:label id="lab_trs_LongTermDebtFairValueOfParValue_D2214A50918DAB0F769F2945217C2E72_terseLabel_en-US" xlink:label="lab_trs_LongTermDebtFairValueOfParValue_D2214A50918DAB0F769F2945217C2E72" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Long-term Debt, Fair Value, % of par value</link:label>
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    <link:label id="lab_us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherExpense_D5213344F3BF8519BF7A0CF16C532273_label_en-US" xlink:label="lab_us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherExpense_D5213344F3BF8519BF7A0CF16C532273" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disposal Group, Including Discontinued Operation, Other Expense</link:label>
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    <link:label id="lab_trs_DisposalGroupIncludingDiscontinuedOperationsNonoperatingExpense_BF275E36962D698886170CF16C53156C_label_en-US" xlink:label="lab_trs_DisposalGroupIncludingDiscontinuedOperationsNonoperatingExpense_BF275E36962D698886170CF16C53156C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disposal Group, Including Discontinued Operations, Nonoperating Expense</link:label>
    <link:label id="lab_trs_DisposalGroupIncludingDiscontinuedOperationsNonoperatingExpense_BF275E36962D698886170CF16C53156C_documentation_en-US" xlink:label="lab_trs_DisposalGroupIncludingDiscontinuedOperationsNonoperatingExpense_BF275E36962D698886170CF16C53156C" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business) attributable to disposal group, including, but not limited to, discontinued operation.</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation" xlink:label="loc_us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation_27D3B459A8C381E6B5D70CF16C53AD1C" xlink:type="locator" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax" xlink:label="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax_01A28A48BE679756405A0CF16C53AA75" xlink:type="locator" />
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    <link:label id="lab_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_927F66C49E2F8C8ADEFB0CCECC83E995_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_927F66C49E2F8C8ADEFB0CCECC83E995" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]</link:label>
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    <link:label id="lab_trs_MetricTypeAxis_D075267FDA5302ABB0DE0CCECC836F6D_terseLabel_en-US" xlink:label="lab_trs_MetricTypeAxis_D075267FDA5302ABB0DE0CCECC836F6D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Metric Type [Axis]</link:label>
    <link:label id="lab_trs_MetricTypeAxis_D075267FDA5302ABB0DE0CCECC836F6D_label_en-US" xlink:label="lab_trs_MetricTypeAxis_D075267FDA5302ABB0DE0CCECC836F6D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Metric Type [Axis]</link:label>
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    <link:loc xlink:href="trs-20160630.xsd#trs_MetricTypeDomain" xlink:label="loc_trs_MetricTypeDomain_9FF2E128C3825BB3AC650CCECC838C17" xlink:type="locator" />
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    <link:label id="lab_trs_A3YearCashFlowMetricMember_FE7AA5665C88ED2869870CCECC839419_label_en-US" xlink:label="lab_trs_A3YearCashFlowMetricMember_FE7AA5665C88ED2869870CCECC839419" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">3 year cash flow metric [Member]</link:label>
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    <link:loc xlink:href="trs-20160630.xsd#trs_A3YearCashFlowMetricMember" xlink:label="loc_trs_A3YearCashFlowMetricMember_FE7AA5665C88ED2869870CCECC839419" xlink:type="locator" />
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    <link:label id="lab_trs_A3YearEpsCagrMetricMember_EE38B57BD173A29B124D0CCECC835ADA_terseLabel_en-US" xlink:label="lab_trs_A3YearEpsCagrMetricMember_EE38B57BD173A29B124D0CCECC835ADA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">3 year EPS CAGR metric [Member]</link:label>
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    <link:label id="lab_trs_A3YearEpsCagrMetricMember_EE38B57BD173A29B124D0CCECC835ADA_documentation_en-US" xlink:label="lab_trs_A3YearEpsCagrMetricMember_EE38B57BD173A29B124D0CCECC835ADA" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Financial metric based on earnings per share (EPS) cumulative average growth rate ("EPS CAGR") over the performance period.</link:label>
    <link:loc xlink:href="trs-20160630.xsd#trs_A3YearEpsCagrMetricMember" xlink:label="loc_trs_A3YearEpsCagrMetricMember_EE38B57BD173A29B124D0CCECC835ADA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_trs_A3YearEpsCagrMetricMember_EE38B57BD173A29B124D0CCECC835ADA" xlink:to="lab_trs_A3YearEpsCagrMetricMember_EE38B57BD173A29B124D0CCECC835ADA" xlink:type="arc" />
    <link:label id="lab_trs_A20122013EpsCagrMetricMember_14D16F54E0097544B2A40CCECC8444B0_terseLabel_en-US" xlink:label="lab_trs_A20122013EpsCagrMetricMember_14D16F54E0097544B2A40CCECC8444B0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2012 &amp; 2013 EPS CAGR metric [Member]</link:label>
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    <link:label id="lab_trs_A20122013EpsCagrMetricMember_14D16F54E0097544B2A40CCECC8444B0_documentation_en-US" xlink:label="lab_trs_A20122013EpsCagrMetricMember_14D16F54E0097544B2A40CCECC8444B0" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Financial metric based on 2012 and 2013 earnings per share (EPS) cumulative average growth rate ("EPS CAGR").</link:label>
    <link:loc xlink:href="trs-20160630.xsd#trs_A20122013EpsCagrMetricMember" xlink:label="loc_trs_A20122013EpsCagrMetricMember_14D16F54E0097544B2A40CCECC8444B0" xlink:type="locator" />
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    <link:label id="lab_trs_CashgenerationmetricMemberMember_58C3D11A551A083D02FF0CCECC843571_terseLabel_en-US" xlink:label="lab_trs_CashgenerationmetricMemberMember_58C3D11A551A083D02FF0CCECC843571" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">3 year ROIC metric [Member]</link:label>
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    <link:label id="lab_trs_CashgenerationmetricMemberMember_58C3D11A551A083D02FF0CCECC843571_documentation_en-US" xlink:label="lab_trs_CashgenerationmetricMemberMember_58C3D11A551A083D02FF0CCECC843571" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Cash generation metric [Member]</link:label>
    <link:loc xlink:href="trs-20160630.xsd#trs_CashgenerationmetricMemberMember" xlink:label="loc_trs_CashgenerationmetricMemberMember_58C3D11A551A083D02FF0CCECC843571" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_trs_CashgenerationmetricMemberMember_58C3D11A551A083D02FF0CCECC843571" xlink:to="lab_trs_CashgenerationmetricMemberMember_58C3D11A551A083D02FF0CCECC843571" xlink:type="arc" />
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    <link:label id="lab_us-gaap_PlanNameAxis_F927EB30B73DC4912C220CCECC84751F_label_en-US" xlink:label="lab_us-gaap_PlanNameAxis_F927EB30B73DC4912C220CCECC84751F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Plan Name [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_PlanNameAxis" xlink:label="loc_us-gaap_PlanNameAxis_F927EB30B73DC4912C220CCECC84751F" xlink:type="locator" />
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    <link:label id="lab_us-gaap_PlanNameDomain_90117301156725E44E260CCECC842B74_terseLabel_en-US" xlink:label="lab_us-gaap_PlanNameDomain_90117301156725E44E260CCECC842B74" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Plan Name [Domain]</link:label>
    <link:label id="lab_us-gaap_PlanNameDomain_90117301156725E44E260CCECC842B74_label_en-US" xlink:label="lab_us-gaap_PlanNameDomain_90117301156725E44E260CCECC842B74" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Plan Name [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_PlanNameDomain" xlink:label="loc_us-gaap_PlanNameDomain_90117301156725E44E260CCECC842B74" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PlanNameDomain_90117301156725E44E260CCECC842B74" xlink:to="lab_us-gaap_PlanNameDomain_90117301156725E44E260CCECC842B74" xlink:type="arc" />
    <link:label id="lab_trs_Plan1Member_CE52B7AC7418CF54C0F40CCECC844BA5_terseLabel_en-US" xlink:label="lab_trs_Plan1Member_CE52B7AC7418CF54C0F40CCECC844BA5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Plan 1 [Member]</link:label>
    <link:label id="lab_trs_Plan1Member_CE52B7AC7418CF54C0F40CCECC844BA5_label_en-US" xlink:label="lab_trs_Plan1Member_CE52B7AC7418CF54C0F40CCECC844BA5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Plan 1 [Member]</link:label>
    <link:label id="lab_trs_Plan1Member_CE52B7AC7418CF54C0F40CCECC844BA5_documentation_en-US" xlink:label="lab_trs_Plan1Member_CE52B7AC7418CF54C0F40CCECC844BA5" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Equity-based compensation arrangement plan.</link:label>
    <link:loc xlink:href="trs-20160630.xsd#trs_Plan1Member" xlink:label="loc_trs_Plan1Member_CE52B7AC7418CF54C0F40CCECC844BA5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_trs_Plan1Member_CE52B7AC7418CF54C0F40CCECC844BA5" xlink:to="lab_trs_Plan1Member_CE52B7AC7418CF54C0F40CCECC844BA5" xlink:type="arc" />
    <link:label id="lab_trs_Plan4Member_9660B6DA08817E49695D0CCECC84E92E_terseLabel_en-US" xlink:label="lab_trs_Plan4Member_9660B6DA08817E49695D0CCECC84E92E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Plan 4 [Member]</link:label>
    <link:label id="lab_trs_Plan4Member_9660B6DA08817E49695D0CCECC84E92E_label_en-US" xlink:label="lab_trs_Plan4Member_9660B6DA08817E49695D0CCECC84E92E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Plan 4 [Member]</link:label>
    <link:label id="lab_trs_Plan4Member_9660B6DA08817E49695D0CCECC84E92E_documentation_en-US" xlink:label="lab_trs_Plan4Member_9660B6DA08817E49695D0CCECC84E92E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Equity-based compensation arrangement plan.</link:label>
    <link:loc xlink:href="trs-20160630.xsd#trs_Plan4Member" xlink:label="loc_trs_Plan4Member_9660B6DA08817E49695D0CCECC84E92E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_trs_Plan4Member_9660B6DA08817E49695D0CCECC84E92E" xlink:to="lab_trs_Plan4Member_9660B6DA08817E49695D0CCECC84E92E" xlink:type="arc" />
    <link:label id="lab_trs_Plan3Member_1DFAD7A5AFB4A8B01CF50CCECC842456_terseLabel_en-US" xlink:label="lab_trs_Plan3Member_1DFAD7A5AFB4A8B01CF50CCECC842456" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Plan 3 [Member]</link:label>
    <link:label id="lab_trs_Plan3Member_1DFAD7A5AFB4A8B01CF50CCECC842456_label_en-US" xlink:label="lab_trs_Plan3Member_1DFAD7A5AFB4A8B01CF50CCECC842456" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Plan 3 [Member]</link:label>
    <link:label id="lab_trs_Plan3Member_1DFAD7A5AFB4A8B01CF50CCECC842456_documentation_en-US" xlink:label="lab_trs_Plan3Member_1DFAD7A5AFB4A8B01CF50CCECC842456" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Equity-based compensation arrangement plan.</link:label>
    <link:loc xlink:href="trs-20160630.xsd#trs_Plan3Member" xlink:label="loc_trs_Plan3Member_1DFAD7A5AFB4A8B01CF50CCECC842456" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_trs_Plan3Member_1DFAD7A5AFB4A8B01CF50CCECC842456" xlink:to="lab_trs_Plan3Member_1DFAD7A5AFB4A8B01CF50CCECC842456" xlink:type="arc" />
    <link:label id="lab_trs_Plan5Member_25FD537FE53E141B1F9D0CCECC84ACD0_terseLabel_en-US" xlink:label="lab_trs_Plan5Member_25FD537FE53E141B1F9D0CCECC84ACD0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Plan 5 [Member]</link:label>
    <link:label id="lab_trs_Plan5Member_25FD537FE53E141B1F9D0CCECC84ACD0_label_en-US" xlink:label="lab_trs_Plan5Member_25FD537FE53E141B1F9D0CCECC84ACD0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Plan 5 [Member]</link:label>
    <link:label id="lab_trs_Plan5Member_25FD537FE53E141B1F9D0CCECC84ACD0_documentation_en-US" xlink:label="lab_trs_Plan5Member_25FD537FE53E141B1F9D0CCECC84ACD0" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Equity-based compensation arrangement plan.</link:label>
    <link:loc xlink:href="trs-20160630.xsd#trs_Plan5Member" xlink:label="loc_trs_Plan5Member_25FD537FE53E141B1F9D0CCECC84ACD0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_trs_Plan5Member_25FD537FE53E141B1F9D0CCECC84ACD0" xlink:to="lab_trs_Plan5Member_25FD537FE53E141B1F9D0CCECC84ACD0" xlink:type="arc" />
    <link:label id="lab_us-gaap_AwardTypeAxis_8A849A2723176DECBFB00CCECC84D8B7_terseLabel_en-US" xlink:label="lab_us-gaap_AwardTypeAxis_8A849A2723176DECBFB00CCECC84D8B7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Award Type [Axis]</link:label>
    <link:label id="lab_us-gaap_AwardTypeAxis_8A849A2723176DECBFB00CCECC84D8B7_label_en-US" xlink:label="lab_us-gaap_AwardTypeAxis_8A849A2723176DECBFB00CCECC84D8B7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Award Type [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AwardTypeAxis" xlink:label="loc_us-gaap_AwardTypeAxis_8A849A2723176DECBFB00CCECC84D8B7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AwardTypeAxis_8A849A2723176DECBFB00CCECC84D8B7" xlink:to="lab_us-gaap_AwardTypeAxis_8A849A2723176DECBFB00CCECC84D8B7" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_555B483FC2B18A6CEF2C0CCECC846628_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_555B483FC2B18A6CEF2C0CCECC846628" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Award Type [Domain]</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_555B483FC2B18A6CEF2C0CCECC846628_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_555B483FC2B18A6CEF2C0CCECC846628" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Equity Award [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_555B483FC2B18A6CEF2C0CCECC846628" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_555B483FC2B18A6CEF2C0CCECC846628" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_555B483FC2B18A6CEF2C0CCECC846628" xlink:type="arc" />
    <link:label id="lab_trs_ServiceBasedRestricedSharesMember_09FCA6B1544C0907A7D40CCECC84BC6A_terseLabel_en-US" xlink:label="lab_trs_ServiceBasedRestricedSharesMember_09FCA6B1544C0907A7D40CCECC84BC6A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Service-based restriced shares [Member]</link:label>
    <link:label id="lab_trs_ServiceBasedRestricedSharesMember_09FCA6B1544C0907A7D40CCECC84BC6A_label_en-US" xlink:label="lab_trs_ServiceBasedRestricedSharesMember_09FCA6B1544C0907A7D40CCECC84BC6A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Service-based restriced shares [Member]</link:label>
    <link:label id="lab_trs_ServiceBasedRestricedSharesMember_09FCA6B1544C0907A7D40CCECC84BC6A_documentation_en-US" xlink:label="lab_trs_ServiceBasedRestricedSharesMember_09FCA6B1544C0907A7D40CCECC84BC6A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Shares that an entity has not yet issued because the agreed-upon consideration, emplooyee services, has not yet been received</link:label>
    <link:loc xlink:href="trs-20160630.xsd#trs_ServiceBasedRestricedSharesMember" xlink:label="loc_trs_ServiceBasedRestricedSharesMember_09FCA6B1544C0907A7D40CCECC84BC6A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_trs_ServiceBasedRestricedSharesMember_09FCA6B1544C0907A7D40CCECC84BC6A" xlink:to="lab_trs_ServiceBasedRestricedSharesMember_09FCA6B1544C0907A7D40CCECC84BC6A" xlink:type="arc" />
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    <link:label id="lab_trs_PerformanceBasedRestricedSharesMember_9B816229D21135AD48670CCECC8463C2_label_en-US" xlink:label="lab_trs_PerformanceBasedRestricedSharesMember_9B816229D21135AD48670CCECC8463C2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Performance-based restriced shares [Member]</link:label>
    <link:label id="lab_trs_PerformanceBasedRestricedSharesMember_9B816229D21135AD48670CCECC8463C2_documentation_en-US" xlink:label="lab_trs_PerformanceBasedRestricedSharesMember_9B816229D21135AD48670CCECC8463C2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Performance-based restriced shares award.</link:label>
    <link:loc xlink:href="trs-20160630.xsd#trs_PerformanceBasedRestricedSharesMember" xlink:label="loc_trs_PerformanceBasedRestricedSharesMember_9B816229D21135AD48670CCECC8463C2" xlink:type="locator" />
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    <link:label id="lab_us-gaap_RestrictedStockMember_E27773DCF6FF95F4BF290CCECC84ED7C_label_en-US" xlink:label="lab_us-gaap_RestrictedStockMember_E27773DCF6FF95F4BF290CCECC84ED7C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Restricted Stock [Member]</link:label>
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    <link:label id="lab_trs_ShareBasedCompensationArrangementByShareBasedPaymentAwardIncentiveCompensationPlanThresholdTargetAwardForGrantingStockAward_1A60A6974C420E5F7F3F596B3D345424_documentation_en-US" xlink:label="lab_trs_ShareBasedCompensationArrangementByShareBasedPaymentAwardIncentiveCompensationPlanThresholdTargetAwardForGrantingStockAward_1A60A6974C420E5F7F3F596B3D345424" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Incentive Compensation Plan, Threshold Target Award for Granting Stock Award.</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_PaymentsToAcquireProductiveAssets" xlink:label="loc_us-gaap_PaymentsToAcquireProductiveAssets_7E6A3A12F22550D16CE122BF1943A20D" xlink:type="locator" />
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    <link:label id="lab_us-gaap_ProceedsFromStockOptionsExercised_9DE49FAB5C2D8E11D63B22BF19438FA4_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromStockOptionsExercised_9DE49FAB5C2D8E11D63B22BF19438FA4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Proceeds from exercise of stock options</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_92DEA935F6D7A75A4F0E0CCECC473FBE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNet_92DEA935F6D7A75A4F0E0CCECC473FBE" xlink:to="lab_us-gaap_PropertyPlantAndEquipmentNet_92DEA935F6D7A75A4F0E0CCECC473FBE" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShortTermDebtTypeAxis_E815D932298D4C05D34D0EBA3ED74B21_terseLabel_en-US" xlink:label="lab_us-gaap_ShortTermDebtTypeAxis_E815D932298D4C05D34D0EBA3ED74B21" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Short-term Debt, Type [Axis]</link:label>
    <link:label id="lab_us-gaap_ShortTermDebtTypeAxis_E815D932298D4C05D34D0EBA3ED74B21_label_en-US" xlink:label="lab_us-gaap_ShortTermDebtTypeAxis_E815D932298D4C05D34D0EBA3ED74B21" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Short-term Debt, Type [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ShortTermDebtTypeAxis" xlink:label="loc_us-gaap_ShortTermDebtTypeAxis_E815D932298D4C05D34D0EBA3ED74B21" xlink:type="locator" />
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    <link:label id="lab_us-gaap_ShortTermDebtTypeDomain_019C62D12EB2218449D80EBA3ED7D272_terseLabel_en-US" xlink:label="lab_us-gaap_ShortTermDebtTypeDomain_019C62D12EB2218449D80EBA3ED7D272" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Short-term Debt, Type [Domain]</link:label>
    <link:label id="lab_us-gaap_ShortTermDebtTypeDomain_019C62D12EB2218449D80EBA3ED7D272_label_en-US" xlink:label="lab_us-gaap_ShortTermDebtTypeDomain_019C62D12EB2218449D80EBA3ED7D272" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Short-term Debt, Type [Domain]</link:label>
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    <link:label id="lab_trs_OverdraftFacilityMember_DADC3951AF1DA3C0214C0EBA3ED7B5E7_terseLabel_en-US" xlink:label="lab_trs_OverdraftFacilityMember_DADC3951AF1DA3C0214C0EBA3ED7B5E7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Overdraft Facility [Member]</link:label>
    <link:label id="lab_trs_OverdraftFacilityMember_DADC3951AF1DA3C0214C0EBA3ED7B5E7_label_en-US" xlink:label="lab_trs_OverdraftFacilityMember_DADC3951AF1DA3C0214C0EBA3ED7B5E7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Overdraft Facility [Member]</link:label>
    <link:label id="lab_trs_OverdraftFacilityMember_DADC3951AF1DA3C0214C0EBA3ED7B5E7_documentation_en-US" xlink:label="lab_trs_OverdraftFacilityMember_DADC3951AF1DA3C0214C0EBA3ED7B5E7" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Overdraft Facility [Member]</link:label>
    <link:loc xlink:href="trs-20160630.xsd#trs_OverdraftFacilityMember" xlink:label="loc_trs_OverdraftFacilityMember_DADC3951AF1DA3C0214C0EBA3ED7B5E7" xlink:type="locator" />
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    <link:label id="lab_us-gaap_SecuredDebtMember_9FB6DD5DD8BE1EA6BF4B0EBA3ED73741_terseLabel_en-US" xlink:label="lab_us-gaap_SecuredDebtMember_9FB6DD5DD8BE1EA6BF4B0EBA3ED73741" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Receivables Facility [Member]</link:label>
    <link:label id="lab_us-gaap_SecuredDebtMember_9FB6DD5DD8BE1EA6BF4B0EBA3ED73741_label_en-US" xlink:label="lab_us-gaap_SecuredDebtMember_9FB6DD5DD8BE1EA6BF4B0EBA3ED73741" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Secured Debt [Member]</link:label>
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    <link:label id="lab_trs_SecuredDebtMaximumBorrowingCapacity_698D0039A9BB64CE14A00EBA3ED7ECED_label_en-US" xlink:label="lab_trs_SecuredDebtMaximumBorrowingCapacity_698D0039A9BB64CE14A00EBA3ED7ECED" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Secured debt, Maximum Borrowing Capacity</link:label>
    <link:label id="lab_trs_SecuredDebtMaximumBorrowingCapacity_698D0039A9BB64CE14A00EBA3ED7ECED_documentation_en-US" xlink:label="lab_trs_SecuredDebtMaximumBorrowingCapacity_698D0039A9BB64CE14A00EBA3ED7ECED" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Maximum borrowing capacity under the receivables facility debt arrangement.</link:label>
    <link:loc xlink:href="trs-20160630.xsd#trs_SecuredDebtMaximumBorrowingCapacity" xlink:label="loc_trs_SecuredDebtMaximumBorrowingCapacity_698D0039A9BB64CE14A00EBA3ED7ECED" xlink:type="locator" />
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    <link:label id="lab_us-gaap_SecuredDebt_6131FB3E424B411EBAAB0EBA3ED77F67_terseLabel_en-US" xlink:label="lab_us-gaap_SecuredDebt_6131FB3E424B411EBAAB0EBA3ED77F67" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Secured Debt</link:label>
    <link:label id="lab_us-gaap_SecuredDebt_6131FB3E424B411EBAAB0EBA3ED77F67_label_en-US" xlink:label="lab_us-gaap_SecuredDebt_6131FB3E424B411EBAAB0EBA3ED77F67" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Secured Debt</link:label>
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    <link:label id="lab_us-gaap_DebtInstrumentUnusedBorrowingCapacityAmount_1D7EF6BC221AD7D553F00EBA3ED7D467_verboseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentUnusedBorrowingCapacityAmount_1D7EF6BC221AD7D553F00EBA3ED7D467" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Receivables facility debt available but not utilized</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_DebtInstrumentUnusedBorrowingCapacityAmount" xlink:label="loc_us-gaap_DebtInstrumentUnusedBorrowingCapacityAmount_1D7EF6BC221AD7D553F00EBA3ED7D467" xlink:type="locator" />
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    <link:label id="lab_trs_ReceivablesFacililtyDebtAggregateCosts_65F02A4BCC1ACF63BA910EBA3ED79222_terseLabel_en-US" xlink:label="lab_trs_ReceivablesFacililtyDebtAggregateCosts_65F02A4BCC1ACF63BA910EBA3ED79222" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Receivables facililty, debt aggregate costs</link:label>
    <link:label id="lab_trs_ReceivablesFacililtyDebtAggregateCosts_65F02A4BCC1ACF63BA910EBA3ED79222_label_en-US" xlink:label="lab_trs_ReceivablesFacililtyDebtAggregateCosts_65F02A4BCC1ACF63BA910EBA3ED79222" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Receivables Facililty, Debt Aggregate Costs</link:label>
    <link:label id="lab_trs_ReceivablesFacililtyDebtAggregateCosts_65F02A4BCC1ACF63BA910EBA3ED79222_documentation_en-US" xlink:label="lab_trs_ReceivablesFacililtyDebtAggregateCosts_65F02A4BCC1ACF63BA910EBA3ED79222" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount of the fee that accompanies borrowing money under the debt instrument.</link:label>
    <link:loc xlink:href="trs-20160630.xsd#trs_ReceivablesFacililtyDebtAggregateCosts" xlink:label="loc_trs_ReceivablesFacililtyDebtAggregateCosts_65F02A4BCC1ACF63BA910EBA3ED79222" xlink:type="locator" />
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    <link:label id="lab_trs_DebtInstrumentUnusedBorrowingCapacityFeePercentage_4AF9AF7EB4962BC17B190EBA3ED7C5D2_terseLabel_en-US" xlink:label="lab_trs_DebtInstrumentUnusedBorrowingCapacityFeePercentage_4AF9AF7EB4962BC17B190EBA3ED7C5D2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt Instrument, Unused Borrowing Capacity, Fee percentage</link:label>
    <link:label id="lab_trs_DebtInstrumentUnusedBorrowingCapacityFeePercentage_4AF9AF7EB4962BC17B190EBA3ED7C5D2_label_en-US" xlink:label="lab_trs_DebtInstrumentUnusedBorrowingCapacityFeePercentage_4AF9AF7EB4962BC17B190EBA3ED7C5D2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Unused Borrowing Capacity, Fee percentage</link:label>
    <link:label id="lab_trs_DebtInstrumentUnusedBorrowingCapacityFeePercentage_4AF9AF7EB4962BC17B190EBA3ED7C5D2_documentation_en-US" xlink:label="lab_trs_DebtInstrumentUnusedBorrowingCapacityFeePercentage_4AF9AF7EB4962BC17B190EBA3ED7C5D2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Debt Instrument, Unused Borrowing Capacity, Fee percentage</link:label>
    <link:loc xlink:href="trs-20160630.xsd#trs_DebtInstrumentUnusedBorrowingCapacityFeePercentage" xlink:label="loc_trs_DebtInstrumentUnusedBorrowingCapacityFeePercentage_4AF9AF7EB4962BC17B190EBA3ED7C5D2" xlink:type="locator" />
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    <link:label id="lab_trs_AverageliquidationperiodReceivablespool_F4FEDD5A7A3444BE96280EBA3ED7F89A_terseLabel_en-US" xlink:label="lab_trs_AverageliquidationperiodReceivablespool_F4FEDD5A7A3444BE96280EBA3ED7F89A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Average liquidation period, Receivables pool</link:label>
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    <link:label id="lab_trs_AverageliquidationperiodReceivablespool_F4FEDD5A7A3444BE96280EBA3ED7F89A_documentation_en-US" xlink:label="lab_trs_AverageliquidationperiodReceivablespool_F4FEDD5A7A3444BE96280EBA3ED7F89A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Average liquidation period, Receivables pool</link:label>
    <link:loc xlink:href="trs-20160630.xsd#trs_AverageliquidationperiodReceivablespool" xlink:label="loc_trs_AverageliquidationperiodReceivablespool_F4FEDD5A7A3444BE96280EBA3ED7F89A" xlink:type="locator" />
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    <link:label id="lab_trs_AverageDiscountRateReceivablesFacility_FC67688480C55701B51D0EBA3ED7DB47_terseLabel_en-US" xlink:label="lab_trs_AverageDiscountRateReceivablesFacility_FC67688480C55701B51D0EBA3ED7DB47" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Average discount rate, Receivables facility</link:label>
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