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) Elgin 104 Holdings LLC

11) FA Victoria 1 LLC

12) First Ammonia LLC

13) Florence 160 Dev LLC

14) Florence FM 970 Ventures, LLC

15) Flying W Properties, Ltd.

16) Fox Tank Company

17) Freedom Boats USA, LLC

18) HillCo Partners, LLC

19) Hunter Industries Ltd.

20) Indorama Ventures Oxides LLC

21) Jewett Mine LLC

22) Jimmy Evans Company, LTD.

23) JTX Land Holdings LLC

24) Lion Elastomers LLC

25) Muldoon Minerals, Inc.

26) NRG Texas Power, LLC

27) PHR Holdings LLC

28) Republic EES, LLC

29) Republic Services, Inc.

30) Republic Waste Services of Texas, Ltd.

31) RGI Materials Inc.

32) Second Nature Compost LLC

33) SL Energy Power Plant I, LLC

34) Southwest Shipyards L.P.

35) Structural Metals, Inc.

36) US Ecology Texas, Inc.

37) US Ecology, Inc.

38) Weisman Equipment Company, Ltd.

39) Wharton County Generation, LLC

40) Williams Brothers Construction Co., Inc.

41) Williamson County Municipal Utility District No. 42

42) 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