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    <IRS990ScheduleO documentId="RetDoc2">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990 - ORGANIZATION'S MISSION</FormAndLineReferenceDesc>
        <ExplanationTxt>SOLE DIRECT LINK IN THE US TO TEACHERS, AND STUDENTS IN THE FIELD OF ROCK MECHANICS AND ROCK ENGINEERING SERVES AS AN ADVOCATE FOR FIRMS AND INDIVIDUALS WHO REPRESENT ALL ASPECTS OF ROCK MECHANICS AND ROCK ENGINEERING TO DISSEMINATE INFORMATION THROUGH MEETINGS, PUBLICATIONS, AND THE INTERNET</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 2, PART III, LINE 4D</FormAndLineReferenceDesc>
        <ExplanationTxt>THE 58TH US ROCK MECHANICS SYMPOSIUM SERVES AS THE DIRECT LINK IN THE UNITED STATES TO THE PROFESSIONALS, FIRMS, EDUCATORS, AND STUDENTS IN THE FIELDS OF ROCK MECHANICS AND ROCK ENGINEERING.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>NO REVIEW WAS OR WILL BE CONDUCTED.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>NO DOCUMENTS AVAILABLE TO THE PUBLIC</ExplanationTxt>
      </SupplementalInformationDetail>
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</Return>