Martin Wetter

RAG Coal International AG operates as a holding company with interest in specializing in coal producing, manufacturing and trading of mining equipment. The company was founded in 1996 and is headquartered in Essen, Germany.

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.

Caterpillar Energy Solutions GmbH engages in the production of gas engines. Its product portfolio includes gas-fueled gensets and cogeneration power plants, which are used in industries such as agriculture, forestry, mining, oil exploration, construction, manufacturing, gas compression and power production. The firm also provides support, diagnosis, parts sales, maintenance, and repair services. The company was founded by Carl Benz in 1871 and is headquartered in Mannheim, Germany.

Part of Caterpillar, Inc., Caterpillar Global Mining HMS GmbH manufactures mining machinery and equipment. The company is based in Dortmund, Germany. The CEO of the German company is Norbert Auffarth.

Part of Caterpillar, Inc., MWM Real Estate GmbH engages in renting real estate properties, including buildings and dwellings. The company is based in Mannheim, Germany. The CEOs of the German company are Peter Körner, Johan Masse.

Max-Alpha Aviation GmbH is a German company that leases real estate properties, buildings, and apartments. The private company is based in Eschbach, Germany. The company was founded in 2007. The CEO is Hans Juergen Meier.