Cjr,Jr. Family 1990 Limited Partnership

Member at 1973 Robertson Exploration No. 2 Limited Partnership
Director at Air Blue Eagle, Inc.
Director at Amercable Incorporated
Governing Person at Ascentium Capital LLC
President at Bali Park 1031 L.L.C.
Trustee at Baylor College of Medicine
Member at Bridgeport Exploration Limited Partnership
Member and Manager at C III Capital Management, LLC
General Partner at Chimineas, Ltd.
Vice President, Director and President at Cjr Management Company
Director at CO2 Is Green, Inc.
Director and President at Corbin J. Robertson, Jr. L.L.C.
Director, Chief Executive Offi and Chairman at Gp Natural Resource Partners LLC
Manager at Gstm LLC
Principal at Maritime Quintana Partners L P
Director and President at Olympia Enterprises, Inc.
President and Director at Olympia Investors Corp.
General Partner at Olympia Investors I, Ltd.
General Partner at Olympia Investors II, Ltd.
General Partner at Olympia Investors III, Ltd.
General Partner at Olympia Investors IV, Ltd.
Director and President at Olympia Realty Corporation
President at Omr, Inc.
General Partner at Oregon Ranch Properties Limited
Director at Plants Need CO2.Org
P/VP and Director at Qmc Holding Company
President at Qmc Mining Corporation
Manager at Qmc Peru L.L.C.
President and Director at Qmp Inc.
P at Quintana Exploration Corporation
Director at Quintana Minerals Brazil L.L.C.
President, Director and Vice President at Quintana Minerals Corporation
President at Quintana Minerals Corporation
Manager at Quintana Minerals Peru L.L.C.
Member at Robertson 1978 Exploration No. 2 Limited Partnership
Member at Robertson Coal Management LLC
Manager at Robertson McConnell Capital Management, LLC
Manager at Robertson Walker Capital Management, LLC
President at Santa Margarita Ranch Company
Member at Sppm Refinery Holdings, LLC
Director at Talen's Marine & Fuel, LLC
Chairman at The Spirit Golf Association
General Partner at The Wcr Family Limited Partnership
Manager at Tres Chup, LLC
Director and President at Western Bridgeport, Inc.
Chief Executive Offi and Director at Western Pocahontas Corporation