The paper deals with the specific formation of stress fields in ore-bearing intrusions at the Oktiabrsky and Talnakh ore deposits with due account of depth of occurrence and formation of tectonic disturbances. The authors have investigated the influence of mining works on stress state of ore-bearing portion of the intrusion. The relationships were obtained in terms of the formation of stress fields in the intrusion during its undermining, overmining and joint mining of several ore deposits. Some recommendations are given for mining of series of ore formations at the Oktiabrsky and Talnakh deposits.

In work results bottom deepening works of the Saimaa channel in lake Finland are resulted. Detonation of underwater files was made deep-hole by charges in diameter 85, 115 and 150 mm. Drilling of chinks was carried out from floating platform PORA-1. The description of the «know-how» of explosive works and settlement parameters is resulted.

Reasonably using the principles laid down in the various systems of wages, you can strengthen the material interest of workers in the development of technical progress, in improving the efficiency of production, the rate of growth of labor productivity and on this basis to ensure an increase in wages for each employee ...