Nieves Alejandro de Leon

ERA Mining Machinery Ltd. manufactures and distributes coal mining machinery. The company was founded on May 26, 2000 and is headquartered in Hong Kong.

Bucyrus International, Inc. designed and manufactured mining equipment for surface and underground mining. Its surface equipment include walking draglines, electric shovels, and rotary blasthole drills and is used for mining coal, copper, iron ore, oil sands and other minerals, and underground equipment is used primarily for mining coal. The firm also manufactures OEM parts and provides support services for all Bucyrus brand mining machines. The company was founded in 1880 and was headquartered in Oak Creek, WI.

DBT GmbH manufactures and supplies underground coal mining systems. It offers a range of equipment from hydraulic shield supports, electro hydraulic controls, conveyors, ploughs and shearers to crushers. The company was founded in 1995 and is headquartered in Lunen, Germany.

DBT RUS OOO provides assembly, commissioning, and maintenance services for coal mining systems and equipment. It also provides spare parts, training, after-sales service, and consulting services. The company is headquartered in Novokuznetsk, Russia.