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        <ExplanationTxt>Non-officers listed in Part VII, Section A are eligible for incentive compensation under GTIs Management Incentive Plan. Recommended bonuses are calculated under the terms of the plan, and the actual incentive awarded must have the approval of the President of GTI. Officer incentive compensation is determined under the terms of the award, and the actual incentive awarded is subject to discretionary adjustment by, and the approval of, the Compensation Commitee of the Board of Directors.</ExplanationTxt>
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        <ExplanationTxt>The CFO reviews the Form 990 prior to its distribution to members of the governing body.</ExplanationTxt>
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        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, Line 12c</FormAndLineReferenceDesc>
        <ExplanationTxt>GTI has a separate conflict of interest policy for its Board of Directors. Conflicts of interest must be reported immediately. If a conflict of interest is identified, it is discussed with the General Counsel to identify the proper course of remedial action. These actions may range from recusal in any business transactions involving GTI or the other interested organization, to withdrawing from involvement in the other organizations board of directors, to other actions that assure the conflict of interest, or even the appearance of a conflict of interest may be avoided. All GTI employees are covered by a separate written conflict of interest policy. Potential and actual employee conflicts of interest are reviewed by the General Counsel. All employees have the obligation to obtain the General Counsels prior written approval for all such activity. The failure to obtain the General Counsels prior written approval shall constitute grounds for immediate dismissal with cause. The directors annually complete a conflict of interest questionnaire. GTI employees annually complete a conflict of interest disclosure statement, and recertify compliance with the policy on a semi-monthly basis.</ExplanationTxt>
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        <ExplanationTxt>The positions that were reviewed included the President and CEO, Chief Financial Officer, General Counsel and Secretary, Vice President of Research Operations, Vice President of Corporate Development, Managing Director, Supply and Conversion, and Managing Director, Delivery and Utilization. Annually, an outside company, CBIZ, determines the appropriate total compensation ranges for the above positions. A recommendation for merit increases and bonuses is made to the Compensation Committee of the Board of Directors, annually, based on the external market study performed by CBIZ, the companys performance, and the individuals performance. The Compensaiton Committee determines the final merit increase and bonus amounts. Merit increases for both officers and managing directors are based on specific formulas which incorporate target amounts for each set of increases, and are increased or reduced companywide, based on the direction of the Compensation Committee. The Compensation Committee specifically approves compensation for officers and reviews all compensation for managing directors as well. Their actions are detailed in the Compensation Committee meeting minutes.</ExplanationTxt>
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        <FormAndLineReferenceDesc>Form 990, Part IX, Line 11g</FormAndLineReferenceDesc>
        <ExplanationTxt>Total of Other Services exceeds 10 of line 25 Col A, therefore a list of expenses follows Engineering and technical services - 16,410,414, Education and Training Services - 964,193, Patent Maintenance Services - 731,603 and Advocacy services 183,740.</ExplanationTxt>
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          <AddressLine1Txt>PO Box 641</AddressLine1Txt>
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        </OtherOrganizationName>
        <TransactionTypeTxt>q</TransactionTypeTxt>
        <InvolvedAmt>118217</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>See Part VII, Note Part V, Line 210</MethodOfAmountDeterminationTxt>
      </TransactionsRelatedOrgGrp>
      <TransactionsRelatedOrgGrp>
        <OtherOrganizationName>
          <BusinessNameLine1Txt>GTI International Inc</BusinessNameLine1Txt>
        </OtherOrganizationName>
        <TransactionTypeTxt>b</TransactionTypeTxt>
        <InvolvedAmt>1799873</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>Cash transferred</MethodOfAmountDeterminationTxt>
      </TransactionsRelatedOrgGrp>
      <TransactionsRelatedOrgGrp>
        <OtherOrganizationName>
          <BusinessNameLine1Txt>GTI International Inc</BusinessNameLine1Txt>
        </OtherOrganizationName>
        <TransactionTypeTxt>f</TransactionTypeTxt>
        <InvolvedAmt>860000</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>Cash transferred</MethodOfAmountDeterminationTxt>
      </TransactionsRelatedOrgGrp>
      <TransactionsRelatedOrgGrp>
        <OtherOrganizationName>
          <BusinessNameLine1Txt>GTI International Inc</BusinessNameLine1Txt>
        </OtherOrganizationName>
        <TransactionTypeTxt>l</TransactionTypeTxt>
        <InvolvedAmt>66735</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>See Part VII, Note Part V, Line 213</MethodOfAmountDeterminationTxt>
      </TransactionsRelatedOrgGrp>
      <TransactionsRelatedOrgGrp>
        <OtherOrganizationName>
          <BusinessNameLine1Txt>GTI Catoosa Test Facility Inc</BusinessNameLine1Txt>
        </OtherOrganizationName>
        <TransactionTypeTxt>b</TransactionTypeTxt>
        <InvolvedAmt>50000</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>Cash transferred</MethodOfAmountDeterminationTxt>
      </TransactionsRelatedOrgGrp>
      <TransactionsRelatedOrgGrp>
        <OtherOrganizationName>
          <BusinessNameLine1Txt>CDH Energy Corporation</BusinessNameLine1Txt>
        </OtherOrganizationName>
        <TransactionTypeTxt>m</TransactionTypeTxt>
        <InvolvedAmt>102613</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>See Part VII, Note Part V, Line 215</MethodOfAmountDeterminationTxt>
      </TransactionsRelatedOrgGrp>
      <TransactionsRelatedOrgGrp>
        <OtherOrganizationName>
          <BusinessNameLine1Txt>Davis Energy Group</BusinessNameLine1Txt>
        </OtherOrganizationName>
        <TransactionTypeTxt>a</TransactionTypeTxt>
        <InvolvedAmt>4755</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>Interest specified in note</MethodOfAmountDeterminationTxt>
      </TransactionsRelatedOrgGrp>
      <TransactionsRelatedOrgGrp>
        <OtherOrganizationName>
          <BusinessNameLine1Txt>Davis Energy Group</BusinessNameLine1Txt>
        </OtherOrganizationName>
        <TransactionTypeTxt>d</TransactionTypeTxt>
        <InvolvedAmt>200000</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>Cash transferred</MethodOfAmountDeterminationTxt>
      </TransactionsRelatedOrgGrp>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part V Line 24</FormAndLineReferenceDesc>
        <ExplanationTxt>The fair value of the administrative and technical indirect services performed for the related organization was determined using GTIs actual cost of labor, the actual fringe rate for the year, and 7 of the labor cost plus fringe. The fair value of technical services performed under a customer project of the related organization was determined using GTIs actual cost, plus fringe and indirects at the government approved provisional indirect rates.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part V Line 25</FormAndLineReferenceDesc>
        <ExplanationTxt>The fair values of expense reimbursements paid to the related party were determined to be the amount at which the expenses were ultimately invoiced to the sponsor of the work.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part V Line 29</FormAndLineReferenceDesc>
        <ExplanationTxt>The fair values of expenses reimbursed by FNI to GTI, and incurred in conjunction with the performance of administrative or technical indirect services by GTI, were determined to be the amount of GTIs actual cost of those expenses. The fair values of expenses reimbursed by FNI to GTI and incurred in conjunction with the performance of a portion of the scope of work on a sponsored project by GTI, were determined using GTIs actual cost plus an allocation of indirect costs calculated using the government approved provisional GA rate for the period.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part V Line 28</FormAndLineReferenceDesc>
        <ExplanationTxt>The fair values of administrative and technical indirect services performed for the related organization were determined to equal GTIs actual cost of labor, the actual fringe rate for the year, and 7 of the labor cost plus fringe. The fair value of technical services performed under a customer project of the related organization was determined using GTIs standard commercial billing rates for 2015.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part V Line 210</FormAndLineReferenceDesc>
        <ExplanationTxt>The fair values of expenses reimbursed to GTI related to administrative and technical indirect services, and travel were determined to equal GTIs actual cost. The fair values of expenses reimbursed to GTI related to customer project expenses other than travel, were determined to equal the actual cost to GTI plus a markup of 31.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part V Line 213</FormAndLineReferenceDesc>
        <ExplanationTxt>The fair value of the administrative and technical indirect services performed for the related organization was determined using GTIs actual cost of labor, the actual fringe rate for the year, and 7 of the labor cost plus fringe.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part V Line 215</FormAndLineReferenceDesc>
        <ExplanationTxt>The fair value of the CDH services performed to execute a portion of the scope of work on a GTI customer sponsored project was determined using CDHs commercial billing rates for 2015.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleR>
  </ReturnData>
</Return>