Daldrup & Söhne Aktiengesellschaft, together with its subsidiaries, provides drilling and environmental services. It provides drilling services for near-surface geothermal energy, such as heat collectors and geothermal probes for heat or cooling; and drilling services for deep geothermal probes for heat recovery, as well as hydrothermal and petrothermal systems for electricity generation and heat recovery. The company also engages in the drilling of wells for the procurement of drinking water, service water, medicinal and mineral water, boiler-feed water, and cooling water, as well as thermal brine. In addition, it offers various services, including hydraulic clean-up of contaminated sites; drilling of gas extraction wells for recovering waste dump gas; mobile environmental analysis; and groundwater quality measurement points and water cleansing plants, as well as the drawing of water samples. Additionally, the company explores deposits of fossil fuels, such anthracite, and oil and gas; and mineral raw materials, which include rock salt, copper, nickel, etc. Further, it explores and secures disused mining systems, as well as builds gas extraction wells for recovering of mine gas. Daldrup & Söhne Aktiengesellschaft was founded in 1946 and is headquartered in Grünwald, Germany.