OGK Group (United Geological Company) is one of the largest independent service companies in Russia providing a full range of services for subsoil users. The company is a contractor of the leading Russian mining companies. Among the main lines of activity of OGK Group is surface drilling and drilling from underground mine workings, drilling and blasting operations. The company also deals with rock mass transportation and shaft mining. The company operates in Russia and abroad. It is in the top ten companies in the global drilling market in terms of technical equipment.