1) AGC of Texas

2) Arcosa LWS, LLC

3) Arcosa Materials, Inc.

4) BFI Waste Services of Texas, LP

5) Colorado Materials, Ltd.

6) Commercial Metals Company

7) D1 Real Estate LLC

8) Dallas/Fort Worth International Airport

9) Ector County Generation LLC

10) FA Victoria 1 LLC

11) First Ammonia LLC

12) Flying W Properties, Ltd.

13) Fox Tank Company

14) Freedom Boats USA, LLC

15) HillCo Partners, LLC

16) Hunter Industries Ltd.

17) Indorama Ventures Oxides LLC

18) Jewett Mine LLC

19) Jimmy Evans Company, LTD.

20) Lion Elastomers LLC

21) Muldoon Minerals, Inc.

22) NRG Texas Power, LLC

23) PHR Holdings LLC

24) Republic EES, LLC

25) Republic Services, Inc.

26) Republic Waste Services of Texas, Ltd.

27) RGI Materials Inc.

28) Second Nature Compost LLC

29) SL Energy Power Plant I, LLC

30) Southwest Shipyards L.P.

31) Structural Metals, Inc.

32) US Ecology Texas, Inc.

33) US Ecology, Inc.

34) Weisman Equipment Company, Ltd.

35) Wharton County Generation, LLC

36) Zinc Resources LLC

1) J. F. Lehman & Company LLC

2) National Association of Royalty Owners - Texas

3) Republic Services, Inc.

4) Sage Geosystems, Inc.

5) Texas Geothermal Energy Alliance

6) US Ecology