Daldrup & Söhne Aktiengesellschaft, together with its subsidiaries, provides drilling and environmental services in Germany and Central Europe. It offers drilling for near-surface and deep geothermal systems, including heat collectors, probes, and hydrothermal and petrothermal systems for electricity and heat. The company also drills wells for drinking, service, medicinal, mineral, boiler-feed, and cooling water, as well as thermal brine. In addition, it provides environmental services such as hydraulic clean-up of contaminated sites, gas extraction wells for waste dump gas, mobile environmental analysis, groundwater quality measurement points, water cleansing plants, and water sampling. It explores fossil fuels (anthracite, oil, gas) and mineral raw materials (rock salt, copper, nickel), and secures disused mining systems and builds gas extraction wells for mine gas. Founded in 1946, it is headquartered in Grünwald, Germany.