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Great Panther Mining Limited operates as a precious metals mining and exploration company. It explores for gold, silver, copper, lead, and zinc ores. The company operates three mines, including the Tucano gold mine in Amapá State, Brazil; and the Guanajuato mine complex and the Topia mine in Mexico, as well as Coricancha mine complex in the central Andes, Peru. Its exploration properties also include the El Horcón, Santa Rosa, and Plomo projects in Mexico. The company was formerly known as Great Panther Silver Limited and changed its name to Great Panther Mining Limited in March 2019. Great Panther Mining Limited was incorporated in 1965 and is headquartered in Vancouver, Canada.

Mandalay Resources Corporation, a natural resource company, engages in the acquisition, exploration, extraction, processing, and reclamation of various mineral properties. It explores for gold, silver, and antimony deposits. The company holds a 100% interest in the Costerfield gold-antimony mine covering an area of 7,540.78 hectares (ha) located in Central Victoria, Australia; and the Bjorkdal gold mine that comprises 9 mining concessions and 19 exploration permits located in Vasterbotten County in northern Sweden. It also holds a 100% interest in the Cerro Bayo silver-gold mine covering 29,495 ha of exploitation concessions and 45 hectares of exploration concessions located in the Cerro Bayo district, southern Chile. In addition, the company holds a 100% interest in the Challacollo silver-gold project, which includes 98 mining exploitation concessions covering an area of 20,378 ha located to the southeast of the port city of Iquique, Chile. Mandalay Resources Corporation was incorporated in 1997 and is headquartered in Toronto, Canada.

MRC Global Inc., through its subsidiaries, distributes pipes, valves, fittings, and other infrastructure products and services in the United States, Canada, and internationally. It offers ball, butterfly, gate, globe, check, diaphragm, needle, and plug valves; other products, such as lined corrosion resistant piping systems, control valves, valve automation, and top work components; and valve modification services, including valve control extensions, welding, hydrotesting, painting, coating, x-raying, and actuation assembly. The company also provides carbon steel fittings and flanges comprising carbon weld fittings, flanges, and piping components; stainless steel, alloy and corrosion resistant pipes, tubing, fittings, and flanges; and carbon line pipes. In addition, it offers natural gas distribution products, including risers, meters, polyethylene pipes and fittings, and various other components and industrial supplies; oilfield and industrial supplies and completion equipment, such as high density polyethylene pipes, fittings, and rods; and specialized production equipment comprising tanks and separators. Further, the company provides various services under the ValidTorque and FastTrack names. Its products are used in the construction, maintenance, repair, and overhaul of equipment used in extreme operating conditions, including high pressure, high/low temperature, and high corrosive and abrasive environments. The company was formerly known as McJunkin Red Man Holding Corporation and changed its name to MRC Global Inc. in January 2012. MRC Global Inc. was founded in 1921 and is headquartered in Houston, Texas.

Nalco Holding Company provides water, energy, air and process technologies and services. It provides service for water, energy and air through the worldwide manufacture and sale of specialized service chemical programs. This includes production and service related to the sale and application of chemicals and technology used in water treatment, pollution control, energy conservation, oil production and refining, steelmaking, papermaking, mining, and other industrial processes. It has three segments: Water Services, Paper Services and Energy Services. In July 2010, it acquired all of the business assets of Fabrication Technologies, Inc. (FabTech), which is a North American supplier of enhanced oil recovery (EOR) mixing and injection equipment. In April 2010, it purchased the assets of Res-Kem Corp. and General Water Services Corp. In January 2010, Nalco acquired a 50.1% controlling financial interest in Nalco Africa. In December 2011, it merged with Ecolab, Inc.

Ur-Energy Inc. engages in the acquisition, exploration, development, and operation of uranium mineral properties. The company holds interests in 12 projects located in the United States. Its flagship property is the Lost Creek project comprising a total of approximately 1,800 unpatented mining claims and three Wyoming mineral leases covering an area of approximately 35,400 acres located in the Great Divide Basin, Wyoming. The company was incorporated in 2004 and is headquartered in Littleton, Colorado.