The results of researches of properties of the new native waterswelling polymer «Petrosorb» are given. Description is given to the design of plugging-up tool for liquidation of catastrophic absorption of flushing fluid in the course of drilling of oil and gas wells.

The article describes various designs of hand-held auger snow and ice core cutters. Experimental data obtained during laboratory and in situ ice cutting are analyzed in connection with the peculiarities of the cutter geometry.

Designed and manufactured in the institute "Giproninemetallorud" stone processing machine is designed for mechanized processing of blocks (curb, cover and facing slabs, steps, etc.) of high-strength stone, such as granite, thermal and gas-dynamic tool.

Alkaline-ultrabasic magmatic manifestations in the north of Middle Siberia are known in the northern marginal part of the Siberian Platform and in the south of the Taimyr folded region. These manifestations of magmatism, confined to two different geostructural zones, are separated by the Yenisei-Khatanga trough. Alkaline-ultrabasic magmatism developed in parallel with trap magmatism during the formation of the Upper Paleozoic-Mesozoic structural stage.

The operational work of a modern coal mine depends to a large extent on a properly and quickly functioning production communication system.The existing mechanical and electrical systems at the mine; shaft signaling between the receiving pads and the machine room, although reliable in operation, cannot fully satisfy all the requirements of the hoisting operation. Thus, for example, in any accident involving the jamming of a cage in the shaft, when it becomes necessary to signal directly from the cage, an imperfect and inconvenient traction signal has to be used. It is even less convenient to use such signaling during works in the shaft (inspection and repair of guides, shaft fixing, cable laying, etc.) associated with frequent stops and movements of the hoisting vessel (cage or skip) for short distances.