Paul G. Vitek

CARBO Ceramics, Inc. is an oilfield services technology company. The firm manufactures and supplies ceramic proppant and resin-coated sand. It operates through the following segments: Oilfield and Industrial Technologies and Services; and Environmental Technologies and Services. The Oilfield and Industrial Technologies and Services segment manufactures and sells ceramic technology products and services, base ceramic proppant and frac sand for both the oilfield and industrial sectors. The Environmental Technologies and Services segment intends to protect operator?s assets and minimize environmental risks and lower lease operating expense. The company was founded in 1987 and is headquartered in Houston, TX.

Liberty Resources II LLC provides oil and gas exploration services. It focuses on the Bakken Shale of North Dakota. The company was founded by Mark C. Pearson is headquartered in Denver, CO.

Liberty Resources LLC provides oil and gas exploration services. It is an oil and gas exploration and acquisition/exploitation company with a focus in the Bakken Shale of North Dakota and Montana. The company was founded in 2010 and is headquartered in Denver, CO.