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        <BookValueAmt>104028</BookValueAmt>
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        <Desc>ACCRUED POSTRETIREMENT BENEFITS</Desc>
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        <Desc>Deferred Rent</Desc>
        <Amt>18973</Amt>
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        <Desc>ACCRUED POSTRETIREMENT BENEFITS</Desc>
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      <OtherLiabilitiesOrgGrp>
        <Desc>SUBLEASE</Desc>
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      <TotalLiabilityAmt>773895</TotalLiabilityAmt>
      <FootnoteTextInd>X</FootnoteTextInd>
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      <RevenueNotReportedAmt>0</RevenueNotReportedAmt>
      <RevenueSubtotalAmt>1988417</RevenueSubtotalAmt>
      <RevenueNotReportedFinclStmtAmt>0</RevenueNotReportedFinclStmtAmt>
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        <FormAndLineReferenceDesc>Part X, Line 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ASSOCIATION IS RECOGNIZED AS EXEMPT FROM FEDERAL INCOME TAX, EXCEPT FOR NET INCOME FROM UNRELATED BUSINESS ACTIVITIES, IF ANY, UNDER SECTION 501(C)(6) OF THE INTERNAL REVENUE CODE. SUCH ACTIVITIES RESULTED IN NO NET TAXABLE INCOME FOR THE YEARS ENDED MARCH 31, 2017 AND 2016. HOWEVER, TAX YEARS ENDED MARCH 31, 2014 THROUGH 2016 REMAIN OPEN TO EXAMINATION BY THE TAXING JURISDICTIONS TO WHICH THE ASSOCIATION IS SUBJECT, AND THEY HAVE NOT BEEN EXTENDED BEYOND THE APPLICABLE STATUTE OF LIMITATIONS.</ExplanationTxt>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>MICHAEL O MCKOWN</PersonNm>
        <TitleTxt>PRESIDENT</TitleTxt>
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        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>33858</DeferredCompensationFlngOrgAmt>
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        <NontaxableBenefitsFilingOrgAmt>23961</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>396693</TotalCompensationFilingOrgAmt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section A, line 2</FormAndLineReferenceDesc>
        <ExplanationTxt>ROBERT E. MURRAY, CHAIRMAN, IS THE FATHER OF RYAN M. MURRAY, BOARD MEMBER.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section A, line 6</FormAndLineReferenceDesc>
        <ExplanationTxt>MEMBERSHIP OF THE BITUMINOUS COAL OPERATORS' ASSOCIATION, INC. (BCOA)IS DIVIDED INTO TWO CLASSES WHICH HAVE VOTING RIGHTS: 1.) BITUMINOUS COAL OPERATORS, WHETHER OR NOT INCORPORATED, WHO SHALL BE REFERRED TO AS OPERATOR MEMBERS. 2.) BITUMINOUS COAL OPERATORS ASSOCIATION, WHETHER OR NOT INCORPORATED, DULY AUTHORIZED BY THEIR CHARTERS OR ARTICLES OF ASSOCIATION TO REPRESENT GROUPS OF BITUMINOUS COAL PRODUCERS WITHIN THEIR RESPECTIVE AREAS OR DISTRICTS IN MATTERS PERTINENT HERETO, WHICH SHALL BE DESIGNATED AS ASSOCIATION MEMBERS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section A, line 7a</FormAndLineReferenceDesc>
        <ExplanationTxt>1.) THE BOARD OF DIRECTORS SHALL CONSIST OF ONE DIRECTOR APPOINTED BY EACH OPERATOR MEMBER OR ANY POOL GROUP OF MEMBERS WHICH PRODUCED IN THE PRECEDING CALENDAR YEAR AT LEAST 1,000,000 TONS OF COAL. EACH OPERATOR MEMBER SHALL BE LIMITED TO ONE DIRECTOR. 2.) ALL ASSOCIATION MEMBERS SHALL BE ENTITLED TO APPOINT AT LEAST ONE DIRECTOR AND SUCH ADDITIONAL DIRECTORS AS THE BOARD OF DIRECTORS MAY DETERMINE AT THE ANNUAL MEETING UNLESS THE ASSOCIATION FALLS BELOW ONE MILLION TONS AS THE RESULT OF DIRECT REPRESENTATION BY A MEMBER OR MEMBERS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section A, line 7b</FormAndLineReferenceDesc>
        <ExplanationTxt>THE AMENDING OF THE CONSTITUTION AND BY-LAWS REQUIRES AN AFFIRMATIVE VOTE FROM MEMBERS REPRESENTING TWO-THIRDS (66-2/3 PERCENT) OF THE TOTAL TONNAGE OF COAL PRODUCED DURING THE PRECEDING CALENDAR YEAR.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, line 11b</FormAndLineReferenceDesc>
        <ExplanationTxt>A DRAFT OF THE FORM 990 IS REVIEWED AND APPROVED BY THE PRESIDENT AND THE SECRETARY/TREASURER. A COPY IS ALSO DISTRIBUTED TO THE REMAINDER OF THE GOVERNING BODY. ONCE APPROVED THE RETURN IS FINALIZED AND SIGNED BY THE PRESIDENT AS APPROPRIATE.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, line 12c</FormAndLineReferenceDesc>
        <ExplanationTxt>BCOA REQUIRES THE EMPLOYEES AND BOARD TO SIGN A CONFLICT OF INTEREST POLICY AND DISCLOSE ANUALLY ANY CONFLICTS AT BCOA'S ANNUAL BOARD MEETING.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, line 15</FormAndLineReferenceDesc>
        <ExplanationTxt>AN ANNUAL SALARY REVIEW IS PERFORMED IN WHICH THE PRESIDENT MAKES RECOMMENDATIONS FOR STAFF MEMBERS, WHICH THE CHAIRMAN REVIEWS AND AMENDS AS NECESSARY. THE CHAIRMAN THEN APPROVES THE ANNUAL SALARY. THE PRESIDENT'S SALARY IS DETERMINED BY THE CHAIRMAN AND BASED ON INDUSTRY FIGURES. ADDITIONALLY, THE BOARD OF DIRECTORS APPROVES THE ANNUAL SALARY BUDGET AS PART OF THE BUDGET APPROVAL PROCESS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section C, line 19</FormAndLineReferenceDesc>
        <ExplanationTxt>GOVERNING DOCUMENTS, CONFLICT OF INTEREST POLICY, AND FINANCIAL STATEMENTS ARE AVAILABLE TO THE PUBLIC UPON REQUEST.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part XI, line 9:</FormAndLineReferenceDesc>
        <ExplanationTxt>Pension Liability Expense 373,478. Post-Retirement Liability Expense 1,322,947.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>990, PART XII, LINE 2C</FormAndLineReferenceDesc>
        <ExplanationTxt>THE PROCESS HAS NOT CHANGED FROM THE PRIOR YEAR.</ExplanationTxt>
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        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>1776 I STREET NW 245</AddressLine1Txt>
          <CityNm>WASHINGTON</CityNm>
          <StateAbbreviationCd>DC</StateAbbreviationCd>
          <ZIPCd>200063703</ZIPCd>
        </USAddress>
        <EIN>753101353</EIN>
        <PrimaryActivitiesTxt>PROVIDE HEALTH CARE BENEFITS FOR RETIRED EMPLOYEES OF BCOA</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>DC</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(c)(9)</ExemptCodeSectionTxt>
        <DirectControllingEntityName>
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