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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule D, Part III, Line 4</FormAndLineReferenceDesc>
        <ExplanationTxt>Description and Purpose of Collections: The museum features exhibits related to all facets of Colorado Fuel and Iron Company (CF&amp;I) and related industries' impacts on the American West. CF&amp;I was a strong force in the development of the history of Pueblo and Southern Colorado. At one time CF&amp;I was the largest private landowner and the largest employer in Colorado and with ownership of mines and mining towns operated throughout the West, the company developed the economy and life in Pueblo as well as surrounding towns in Southern Colorado. By visiting the Steelworks Museum, the public is invited to learn how CF&amp;I played a part in the history and development of Colorado through the histories of: Western industrialization, Coal and iron mining, Steel production, The Denver &amp; Rio Grande and Colorado and Wyoming railroads, Labor issues, and Western immigration. The Steelworks Museum was opened in 2007 and serves as the interpretive center for CF&amp;I history. The Steelworks Center of the West was established in 2014 to integrate all of the museum, archives and education programs. The CF&amp;I Archives, held by Bessemer Historical Society (now Steelworks Center of the West), include over 100,000 photographs, more than 150 films, 30,000 maps and drawings, hundreds of ledgers, and internal publications such as Camp and Plant, The Industrial Bulletin, and The Blast. The mission of the archives is (1) To appraise, collect, organize, provide access, and preserve archival materials and secondary resource materials illustrating the origins, growth and development of the Colorado Fuel &amp; Iron Company, its previous incarnations, and its subsidiary companies and corporations. (2) To provide appropriate conditions and facilities for the retention, protection, and preservation of these records. (3) To provide regular reference services and access to individuals, organizations, or other groups interested in the collections, and (4) To encourage the use of the collection and to increase the public awareness and appreciation of CF&amp;I's history through publications, exhibitions and other outreach programs.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule D, Part X, Line 2</FormAndLineReferenceDesc>
        <ExplanationTxt>The Society is exempt from federal income taxes under Section 501(c)(3)of the Internal Revenue Code. In addition, the Society qualifies for the charitable contribution deduction and has been classified as an organization other than a private foundation. The Society believes than it does not have any uncertain tax positions that are material to the financial statements.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule D, Part XI, line 2 d</FormAndLineReferenceDesc>
        <ExplanationTxt>Other: $93,435. Rental expenses reported in expense within the audited financial statements and reclassified to revenue for the tax return.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule D, Part XII, Line 2d</FormAndLineReferenceDesc>
        <ExplanationTxt>Other: $93,435. Rental expenses reported in expense within the audited financial statements and reclassified to revenue for the tax return.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleD>
    <IRS990ScheduleG documentId="IRS990ScheduleG">
      <FundraisingEventInformationGrp>
        <Event1Nm>Faces 2023</Event1Nm>
        <GrossReceiptsEvent1Amt>36453</GrossReceiptsEvent1Amt>
        <CharitableContriEvent1Amt>30516</CharitableContriEvent1Amt>
        <GrossRevenueEvent1Amt>5937</GrossRevenueEvent1Amt>
        <NonCashPrizesEvent1Amt>224</NonCashPrizesEvent1Amt>
        <FoodAndBeverageEvent1Amt>9820</FoodAndBeverageEvent1Amt>
        <OtherDirectExpensesEvent1Amt>2885</OtherDirectExpensesEvent1Amt>
        <Event2Nm>Stellabration</Event2Nm>
        <GrossReceiptsEvent2Amt>5100</GrossReceiptsEvent2Amt>
        <CharitableContriEvent2Amt>5100</CharitableContriEvent2Amt>
        <OtherDirectExpensesEvent2Amt>2467</OtherDirectExpensesEvent2Amt>
        <OtherEventsTotalCnt>0</OtherEventsTotalCnt>
        <GrossReceiptsTotalAmt>41553</GrossReceiptsTotalAmt>
        <CharitableContributionsTotAmt>35616</CharitableContributionsTotAmt>
        <GrossRevenueTotalEventsAmt>5937</GrossRevenueTotalEventsAmt>
        <NonCashPrizesTotalEventsAmt>224</NonCashPrizesTotalEventsAmt>
        <FoodAndBeverageTotalEventsAmt>9820</FoodAndBeverageTotalEventsAmt>
        <OthDirectExpnssTotalEventsAmt>5352</OthDirectExpnssTotalEventsAmt>
        <DirectExpenseSummaryEventsAmt>15396</DirectExpenseSummaryEventsAmt>
        <NetIncomeSummaryAmt>-9459</NetIncomeSummaryAmt>
      </FundraisingEventInformationGrp>
    </IRS990ScheduleG>
    <IRS990ScheduleO documentId="IRS990ScheduleO">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990 Part 1 Line 1</FormAndLineReferenceDesc>
        <ExplanationTxt>AND RELATED ACTIVITIES LEADING TO THE INDUSTRIALIZATION OF THE ENTIRE WESTERN UNITED STATES.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section A, line 2</FormAndLineReferenceDesc>
        <ExplanationTxt>BOARD DIRECTOR, CHRIS (CJ) WALSER, AND BOARD MEMBER, ERIK WALSER, ARE RELATED, AS PER THE IRS DEFINITION OF A FAMILIAR RELATIONSHIP.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, PART VI, Section B, LINE 11 B</FormAndLineReferenceDesc>
        <ExplanationTxt>THE Executive Director OF THE ORGANIZATION DISTRIBUTES A PDF COPY OF THE 990 RETURN TO ALL BOARD MEMBERS FOR REVIEW AND COMMENT PRIOR TO BEING FILED.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, PART VI, Section B, Line 12 C</FormAndLineReferenceDesc>
        <ExplanationTxt>AT EACH BOARD MEETING, IF THERE IS A DISCUSSION OF SELECTING OR ENGAGING A VENDOR OR SERVICE PROVIDER, ALL IN ATTENDANCE ARE ASKED TO RECUSE THEMSELVES FROM THIS DISCUSSION IF THERE COULD BE A PERCEIVED CONFLICT. ANNUALLY, THE ORGANIZATION REVIEWS AND DISCUSSES THE CONFLICT OF INTEREST POLICY AND REQUESTS THAT EACH BOARD MEMBER LIST AND ACKNOWLEDGE ANY KNOWN CONFLICTS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, PART VI, Section B, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION WILL PROVIDE IN A TIMELY MANNER, COPIES OF ALL GOVERNING DOCUMENTS INCLUDING ITS CONFLICT OF INTEREST POLICY, WHEN REQUESTED IN WRITING OR IN PERSON. THE ORGANIZATION'S GOVERNING DOCUMENTS, IRS TAX EXEMPTION LETTER, AND PRIOR YEAR TAX RETURNS ARE ALL AVAILABLE ON THE ORGANIZATION'S WEBSITE: WWW.STEELWORKSCENTER.ORG.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part XII, line 2 c</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION HAS AN AUDIT COMMITTEE THAT ASSUMES RESPONSIBILITY FOR SELECTING THE INDEPENDENT AUDITOR FOR THE FINANCIAL STATEMENT AUDIT. THIS PROCESS HAS NOT CHANGED FROM PRIOR YEARS.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>