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US Locations Where GCI Has Provided Service

Map of Facilities

          
█     National Cement
        Bravo Energy
        Cemex Corp

 █    Holcim Inc.
        Ecova Corp.

 █    Lone Star Industries
        Vista Chemical
        Holcim Inc.
        TXI
        North Texas Cement
        Regulatory Offices
        Shell Corp
        USPCI
        Cemex Corp.

 █    Lafarge Corp.
        Heartland Cement
        Ash Grove Corp.
        Regulatory Offices

 █    Ash Grove Corp.

 █    Dacotah Cement

 █    Lafarge Corp.
        Holcim Inc.

 █    Lafarge Corp  Cemex

 █    Lafarge Corp Cemex 		█     Ash Grove Corp.
        Regulatory Offices
        Continental Cement
        Holcim Inc.
        River Cement
        Lone Star Industries

█     Ash Grove Corp.
        Regulatory Offices

█     National Cement
        Holcim Inc.
        Regulatory Offices

█     Cemex Corp.

█     Cemex Corp.

█     Safety-Kleen Corp.
        Portland Cement Assn.
        Chemical Waste Mgmt.
        Medusa Cement
        Lone Star Industries
        Regulatory Offices

█     Hydrite Corp.

█     Regulatory Offices
        St. Lawrence Cement

█     Cemex Corp.
        Riverton Investment Corp 		█     Rhone-Poulenc
        Lone Star Industries
        Regulatory Offices
        Cemex Corp.
        ERAtech
        Regulatory Offices

█     North Texas Cement
        CKRC
        Regulatory Offices

█     Triangle Labs
        Regulatory Offices

█     Safety-Kleen Corp.
        Holcim, Inc.
        General Engineering Labs

█     Cemex Corp.

█     Holcim Inc.

█     Holcim Inc.
        Regulatory Offices

█     Holcim Inc.

█     Holcim Inc.

█     Holcim Inc.

█     St. Lawrence Cement