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Black Ridge Oil & Gas, Inc. does not have significant operations. It intends to identify and evaluate businesses or assets with a view to complete a qualifying transaction. The company was formerly known as Ante5, Inc. and changed its name to Black Ridge Oil & Gas, Inc. in April 2012. Black Ridge Oil & Gas, Inc. was founded in 2010 and is headquartered in Minneapolis, Minnesota.

CARBO Ceramics Inc., a technology company, provides products and services to the oil and gas, industrial, and environmental markets worldwide. It operates through two segments, Oilfield and Industrial Technologies and Services, and Environmental Technologies and Services. The Oilfield and Industrial Technologies and Services segment manufactures and sells oilfield ceramic technology products, base ceramic proppants, and frac sand proppants to pressure pumping companies, and oil and gas operators for use in the hydraulic fracturing of natural gas and oil wells. It also provides technology to design, build, and optimize the Frac; sells fracture stimulation software under the FracPro brand; and offers fracture design and consulting services to oil and natural gas exploration and production companies under the StrataGen brand name. The Environmental Technologies and Services segment provides spill prevention, containment, and countermeasure systems for the oil and gas industry. CARBO Ceramics Inc. was founded in 1987 and is headquartered in Houston, Texas.

InPlay Oil Corp. engages in the acquisition, exploration, development, and production of petroleum and natural gas properties in Canada. The company produces and sells crude oil, natural gas, and natural gas liquids. It focuses on light oil asset base located in West Central, Alberta. InPlay Oil Corp. is headquartered in Calgary, Canada.

Victory Oilfield Tech, Inc. operates as an oilfield energy technology products company in the United States. The company offers patented oil and gas drilling products. It also provides various hardbanding solutions to the oilfield operators for drill and weight pipes, tubing, and drill collars, as well as grinding services. The company was formerly known as Victory Energy Corporation and changed its name to Victory Oilfield Tech, Inc. in May 2018. Victory Oilfield Tech, Inc. was incorporated in 1982 and is based in Austin, Texas.