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      <AcctsActvsOutUSTable>
        <Region>South America</Region>
        <TypeOfActivitiesConducted>Indirect management activity</TypeOfActivitiesConducted>
        <TotalExpenditures>3269</TotalExpenditures>
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        <Region>North America</Region>
        <TypeOfActivitiesConducted>Program Services</TypeOfActivitiesConducted>
        <SpecificServicesProvided>Education related</SpecificServicesProvided>
        <TotalExpenditures>66317</TotalExpenditures>
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      <InterestInForeignTrust>false</InterestInForeignTrust>
      <OwnForeignCorp>true</OwnForeignCorp>
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        <Explanation>Amounts in column f are reported on the accrual basis of accounting.</Explanation>
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        <BonusFilingOrg>33161</BonusFilingOrg>
        <OtherCompensationFilingOrg>17562</OtherCompensationFilingOrg>
        <DeferredCompFilingOrg>21129</DeferredCompFilingOrg>
        <NontaxableBenefitsFilingOrg>14139</NontaxableBenefitsFilingOrg>
        <TotalCompensationFilingOrg>230852</TotalCompensationFilingOrg>
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        <NamePerson>Mr Willam Liss</NamePerson>
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        <BonusFilingOrg>27006</BonusFilingOrg>
        <OtherCompensationFilingOrg>23188</OtherCompensationFilingOrg>
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        <BonusFilingOrg>18701</BonusFilingOrg>
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        <NontaxableBenefitsFilingOrg>6542</NontaxableBenefitsFilingOrg>
        <TotalCompensationFilingOrg>231294</TotalCompensationFilingOrg>
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        <NontaxableBenefitsFilingOrg>1972</NontaxableBenefitsFilingOrg>
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        <NamePerson>Mr Ronald Edelstein</NamePerson>
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        <NontaxableBenefitsFilingOrg>13305</NontaxableBenefitsFilingOrg>
        <TotalCompensationFilingOrg>209758</TotalCompensationFilingOrg>
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        <NamePerson>Ms Barbara Weber</NamePerson>
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        <OtherCompensationFilingOrg>25220</OtherCompensationFilingOrg>
        <DeferredCompFilingOrg>28692</DeferredCompFilingOrg>
        <NontaxableBenefitsFilingOrg>7464</NontaxableBenefitsFilingOrg>
        <TotalCompensationFilingOrg>211179</TotalCompensationFilingOrg>
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        <NamePerson>Mr Stanley Borys</NamePerson>
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        <TotalCompensationFilingOrg>808690</TotalCompensationFilingOrg>
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        <NamePerson>Mr Guy Lewis</NamePerson>
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        <BonusFilingOrg>29025</BonusFilingOrg>
        <OtherCompensationFilingOrg>23590</OtherCompensationFilingOrg>
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        <NontaxableBenefitsFilingOrg>20961</NontaxableBenefitsFilingOrg>
        <TotalCompensationFilingOrg>234303</TotalCompensationFilingOrg>
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      <Form990ScheduleJPartIII>
        <Identifier>I</Identifier>
        <ReturnReference>1a</ReturnReference>
        <Explanation>GTI requires prior written approval of the President and CEO, or the Vice President of Finance, Treasurer and CFO, in order to reimburse any costs related to a spouse accompanying a staff member on a business trip. GTI reimburses all employees up to 200 per year for health club dues substantiated by a receipt.</Explanation>
      </Form990ScheduleJPartIII>
      <Form990ScheduleJPartIII>
        <Identifier>I</Identifier>
        <ReturnReference>5a</ReturnReference>
        <Explanation>Inventors share in the net proceeds received by GTI from licensed and/or assigned patents on which they are named as an inventor, in accordance with GTIs written Royalty Distribution Procedure. Total such payments to the persons listed in Part VII, Section A, amounted to 414 in 2010. The payments were made to Mr. Abbasi.</Explanation>
      </Form990ScheduleJPartIII>
      <Form990ScheduleJPartIII>
        <Identifier>I</Identifier>
        <ReturnReference>7</ReturnReference>
        <Explanation>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 approval of the Compensation Committee of the Board.</Explanation>
      </Form990ScheduleJPartIII>
      <Form990ScheduleJPartIII>
        <Identifier>II</Identifier>
        <ReturnReference>14</ReturnReference>
        <Explanation>Payments to Mr. Borys are for the reimbursement of litigation expenses related to legal matters stemming from GTI business activities that occurred while Mr. Borys was employed by GTI.</Explanation>
      </Form990ScheduleJPartIII>
    </IRS990ScheduleJ>
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      <Form990ScheduleLPartIV>
        <NameOfInterestedPerson>
          <NameBusiness>
            <BusinessNameLine1>Atmos Energy Corporation</BusinessNameLine1>
          </NameBusiness>
        </NameOfInterestedPerson>
        <Relationship>GTI Director also Officer of Atmos Energy Corp.</Relationship>
        <AmountOfTransaction>100000</AmountOfTransaction>
        <DescriptionOfTransaction>GTI Sustaining Memb. Program dues</DescriptionOfTransaction>
        <SharingOfRevenues>false</SharingOfRevenues>
      </Form990ScheduleLPartIV>
      <Form990ScheduleLPartIV>
        <NameOfInterestedPerson>
          <NameBusiness>
            <BusinessNameLine1>Atmos Energy Corporation</BusinessNameLine1>
          </NameBusiness>
        </NameOfInterestedPerson>
        <Relationship>GTI Director also Officer of Atmos Energy Corp.</Relationship>
        <AmountOfTransaction>6580</AmountOfTransaction>
        <DescriptionOfTransaction>GTI project research funding education classes</DescriptionOfTransaction>
        <SharingOfRevenues>false</SharingOfRevenues>
      </Form990ScheduleLPartIV>
      <Form990ScheduleLPartIV>
        <NameOfInterestedPerson>
          <NameBusiness>
            <BusinessNameLine1>Southern California Gas Company</BusinessNameLine1>
          </NameBusiness>
        </NameOfInterestedPerson>
        <Relationship>Former Director also Officer of South. Calif. Gas Co.</Relationship>
        <AmountOfTransaction>100000</AmountOfTransaction>
        <DescriptionOfTransaction>GTI Sustaining Memb. Program dues</DescriptionOfTransaction>
        <SharingOfRevenues>false</SharingOfRevenues>
      </Form990ScheduleLPartIV>
      <Form990ScheduleLPartIV>
        <NameOfInterestedPerson>
          <NameBusiness>
            <BusinessNameLine1>Southern California Gas Company</BusinessNameLine1>
          </NameBusiness>
        </NameOfInterestedPerson>
        <Relationship>Former Director also Officer of South. Calif. Gas Co.</Relationship>
        <AmountOfTransaction>299989</AmountOfTransaction>
        <DescriptionOfTransaction>GTI project research funding education classes</DescriptionOfTransaction>
        <SharingOfRevenues>false</SharingOfRevenues>
      </Form990ScheduleLPartIV>
      <Form990ScheduleLPartIV>
        <NameOfInterestedPerson>
          <NameBusiness>
            <BusinessNameLine1>Piedmont Natural Gas</BusinessNameLine1>
          </NameBusiness>
        </NameOfInterestedPerson>
        <Relationship>GTI Director also Officer of Piedmont Natural Gas</Relationship>
        <AmountOfTransaction>100000</AmountOfTransaction>
        <DescriptionOfTransaction>GTI Sustaining Memb. Program dues</DescriptionOfTransaction>
        <SharingOfRevenues>false</SharingOfRevenues>
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      <Form990ScheduleLPartIV>
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          <NameBusiness>
            <BusinessNameLine1>Piedmont Natural Gas</BusinessNameLine1>
          </NameBusiness>
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        <Relationship>GTI Director also Officer or Piedmont Natural Gas</Relationship>
        <AmountOfTransaction>5395</AmountOfTransaction>
        <DescriptionOfTransaction>GTI project research funding education classes</DescriptionOfTransaction>
        <SharingOfRevenues>false</SharingOfRevenues>
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          <NameBusiness>
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        <DescriptionOfTransaction>GTI Sustaining Memb. Program dues</DescriptionOfTransaction>
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          <NameBusiness>
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        <DescriptionOfTransaction>GTI Education classes</DescriptionOfTransaction>
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          <NameBusiness>
            <BusinessNameLine1>National Fuel Gas Company</BusinessNameLine1>
          </NameBusiness>
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        <DescriptionOfTransaction>GTI Sustaining Memb. Program dues</DescriptionOfTransaction>
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          <NameBusiness>
            <BusinessNameLine1>National Fuel Gas Company</BusinessNameLine1>
          </NameBusiness>
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        <Relationship>GTI Director also Officer of National Fuel Gas Co.</Relationship>
        <AmountOfTransaction>1180</AmountOfTransaction>
        <DescriptionOfTransaction>GTi Education classes</DescriptionOfTransaction>
        <SharingOfRevenues>false</SharingOfRevenues>
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      <GeneralExplanation>
        <Identifier>Form 990 Part XI</Identifier>
        <ReturnReference>5</ReturnReference>
        <Explanation>The total of other changes in net assets of 3,645,838 represents unrealized gains and losses on investments carried at fair value.</Explanation>
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      <GeneralExplanation>
        <Identifier>Form 990 Part VI</Identifier>
        <ReturnReference>11b</ReturnReference>
        <Explanation>The CFO reviews the Form 990 prior to its distribution to the members of the governing body.</Explanation>
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      <GeneralExplanation>
        <Identifier>Form 990 Part VI</Identifier>
        <ReturnReference>19</ReturnReference>
        <Explanation>No documents available to the public.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>Form 990 Part VI</Identifier>
        <ReturnReference>15</ReturnReference>
        <Explanation>The positions that were reviewed included the President and CEO, Vice President and Chief Technology Officer, Chief Financial Officer, General Counsel and Secretary, Vice President of Corporate Development, Managing Director, Supply-Gasification, Managing Director, End Use Solutions, Managing Director, Delivery and Managing Director Supply-Exploration and Production. Every year 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 Compensation Committee determines the final merit increase and bonus amounts. Merit increases and bonuses for both officers and managing directors are contd below</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>Form 990 Part VI</Identifier>
        <ReturnReference>15</ReturnReference>
        <Explanation>contd from above 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 all compensation for officers and reviews all compensation for managing directors as well. Their actions are detailed in the Compensation Committee Minutes.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>Form 990 Part VI</Identifier>
        <ReturnReference>12c</ReturnReference>
        <Explanation>GTI has a separate written 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 business or 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 an obligation to obtain the General Counsels prior written approval for all such activity. contd below</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>Form 990 Part VI</Identifier>
        <ReturnReference>12c</ReturnReference>
        <Explanation>contd from above The failure to obtatin such prior 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.</Explanation>
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        <ShareOfEOYAssets>169086</ShareOfEOYAssets>
        <DisproportionateAllocations>false</DisproportionateAllocations>
        <GeneralOrManagingPartner>false</GeneralOrManagingPartner>
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        <NameOfRelatedOrg>
          <BusinessNameLine1>Cement Lock Group LLC</BusinessNameLine1>
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          <AddressLine1>1700 S Mount Prospect Road</AddressLine1>
          <City>DesPlaines</City>
          <State>IL</State>
          <ZIPCode>60018</ZIPCode>
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        <EIN>364193651</EIN>
        <PrimaryActivity>Contractor/consultant</PrimaryActivity>
        <LegalDomicileState>DE</LegalDomicileState>
        <DirectControllingEntityName>
          <BusinessNameLine1>Endesco Services Inc</BusinessNameLine1>
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        <PredominantIncomeType>Unrelated</PredominantIncomeType>
        <ShareOfTotalIncome>14421</ShareOfTotalIncome>
        <ShareOfEOYAssets>41999</ShareOfEOYAssets>
        <DisproportionateAllocations>true</DisproportionateAllocations>
        <GeneralOrManagingPartner>false</GeneralOrManagingPartner>
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        <NameOfRelatedOrg>
          <BusinessNameLine1>GRI International Inc</BusinessNameLine1>
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        <AddressUS>
          <AddressLine1>1700 S Mount Prospect</AddressLine1>
          <City>DesPlaines</City>
          <State>IL</State>
          <ZIPCode>60018</ZIPCode>
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        <EIN>364349614</EIN>
        <PrimaryActivity>Product Commercialization</PrimaryActivity>
        <LegalDomicileState>DE</LegalDomicileState>
        <DirectControllingEntityNA>N/A</DirectControllingEntityNA>
        <TypeOfEntity>C Corp</TypeOfEntity>
        <ShareOfTotalIncome>-73256</ShareOfTotalIncome>
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      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>Endesco Services Inc</BusinessNameLine1>
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          <AddressLine1>1700 S Mount Prospect</AddressLine1>
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          <ZIPCode>60018</ZIPCode>
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        <EIN>363177556</EIN>
        <PrimaryActivity>Energy/Envrn Tech</PrimaryActivity>
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        <PercentageOwnership>1.00000</PercentageOwnership>
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      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>GTI Catoosa Test Facility Inc</BusinessNameLine1>
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          <AddressLine1>1700 S Mount Prospect</AddressLine1>
          <City>DesPlaines</City>
          <State>IL</State>
          <ZIPCode>60018</ZIPCode>
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        <EIN>742914111</EIN>
        <PrimaryActivity>Testing equipment</PrimaryActivity>
        <LegalDomicileState>DE</LegalDomicileState>
        <DirectControllingEntityNA>N/A</DirectControllingEntityNA>
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          <BusinessNameLine1>CrystaTech Inc</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>1700 S Mount Prospect</AddressLine1>
          <City>DesPlaines</City>
          <State>IL</State>
          <ZIPCode>60018</ZIPCode>
        </AddressUS>
        <EIN>742964099</EIN>
        <PrimaryActivity>Tech services</PrimaryActivity>
        <LegalDomicileState>DE</LegalDomicileState>
        <DirectControllingEntityNA>N/A</DirectControllingEntityNA>
        <TypeOfEntity>C Corp</TypeOfEntity>
        <ShareOfTotalIncome>174412</ShareOfTotalIncome>
        <ShareOfEOYAssets>418511</ShareOfEOYAssets>
        <PercentageOwnership>0.79700</PercentageOwnership>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>GTI E&amp;P Services Canada Inc</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressForeign>
          <AddressLine1>101 6th Avenue SW</AddressLine1>
          <City>Calgary</City>
          <ProvinceOrState>AB</ProvinceOrState>
          <Country>CA</Country>
          <PostalCode>T2P3P4</PostalCode>
        </AddressForeign>
        <PrimaryActivity>Tech Services</PrimaryActivity>
        <LegalDomicileForeignCountry>CA</LegalDomicileForeignCountry>
        <DirectControllingEntityNA>N/A</DirectControllingEntityNA>
        <TypeOfEntity>C Corp</TypeOfEntity>
        <PercentageOwnership>1.00000</PercentageOwnership>
      </Form990ScheduleRPartIV>
      <ReceiptOfIntAnnRentsRoyalties>true</ReceiptOfIntAnnRentsRoyalties>
      <GiftGrantOrCapContrToOtherOrg>true</GiftGrantOrCapContrToOtherOrg>
      <GiftGrantOrCapContrFrOtherOrg>false</GiftGrantOrCapContrFrOtherOrg>
      <LoansOrGuaranteesToOtherOrg>true</LoansOrGuaranteesToOtherOrg>
      <LoansOrGuaranteesFromOtherOrg>false</LoansOrGuaranteesFromOtherOrg>
      <SaleOfAssetsToOtherOrg>false</SaleOfAssetsToOtherOrg>
      <PurchaseOfAssetsFromOtherOrg>false</PurchaseOfAssetsFromOtherOrg>
      <ExchangeOfAssets>false</ExchangeOfAssets>
      <RentalOfFacilitiesToOtherOrgs>false</RentalOfFacilitiesToOtherOrgs>
      <RentalOfFacilitiesFrOtherOrgs>true</RentalOfFacilitiesFrOtherOrgs>
      <PerformOfServicesForOtherOrgs>true</PerformOfServicesForOtherOrgs>
      <PerformOfServicesByOtherOrgs>true</PerformOfServicesByOtherOrgs>
      <SharingOfFacilities>false</SharingOfFacilities>
      <SharingOfPaidEmployees>false</SharingOfPaidEmployees>
      <ReimbursementPaidToOtherOrg>true</ReimbursementPaidToOtherOrg>
      <ReimbursementPaidByOtherOrg>true</ReimbursementPaidByOtherOrg>
      <OtherTransferToOtherOrg>false</OtherTransferToOtherOrg>
      <OtherTransferFromOtherOrg>false</OtherTransferFromOtherOrg>
      <TransactionsRelatedOrgsTable>
        <NameOfOtherOrganization>
          <BusinessNameLine1>GTI Catoosa Test Facility Inc</BusinessNameLine1>
        </NameOfOtherOrganization>
        <TransactionType>a</TransactionType>
        <AmountInvolved>9753</AmountInvolved>
        <MethodOfAmtDetermination>Note bal market rate</MethodOfAmtDetermination>
      </TransactionsRelatedOrgsTable>
      <TransactionsRelatedOrgsTable>
        <NameOfOtherOrganization>
          <BusinessNameLine1>GTI Catoosa Test Facility Inc</BusinessNameLine1>
        </NameOfOtherOrganization>
        <TransactionType>j</TransactionType>
        <AmountInvolved>682495</AmountInvolved>
        <MethodOfAmtDetermination>Cost plus fee</MethodOfAmtDetermination>
      </TransactionsRelatedOrgsTable>
      <TransactionsRelatedOrgsTable>
        <NameOfOtherOrganization>
          <BusinessNameLine1>Endesco Clean Harbors LLC</BusinessNameLine1>
        </NameOfOtherOrganization>
        <TransactionType>a</TransactionType>
        <AmountInvolved>11475</AmountInvolved>
        <MethodOfAmtDetermination>Note bal market rate</MethodOfAmtDetermination>
      </TransactionsRelatedOrgsTable>
      <TransactionsRelatedOrgsTable>
        <NameOfOtherOrganization>
          <BusinessNameLine1>GTI Catoosa Test Facility Inc</BusinessNameLine1>
        </NameOfOtherOrganization>
        <TransactionType>r</TransactionType>
        <AmountInvolved>443083</AmountInvolved>
        <MethodOfAmtDetermination>Principal value of note</MethodOfAmtDetermination>
      </TransactionsRelatedOrgsTable>
    </IRS990ScheduleR>
  </ReturnData>
</Return>