M.A. Zaitsev, V.V. Gushchenko
The authors discuss some methods gold-bearing sand thawing. Tekhnokompleks Company has grounded the engineering and economic feasibility of the application of HBR 15 self-propelled hydraulic drill rigs with the defrosting needles installed inside for placer deposit thawing. The description is provided of the drill rig advantages and design features. The Company’s partners are also listed, among which the largest producers in a broad ranges of the industry sectors.