OPEN CUT DEVELOPMENT METHOD FOR STEEPLY LOW STRATIFIED DEPOSITS Russian patent published in 2014 - IPC E21C41/26 

FIELD: oil and gas industry.

SUBSTANCE: invention pertains to mining and it can be used for development of steeply low stratified deposits, including eluvial and deluvial placers. The method includes stock penetration at independent levels, formation of working sites and extraction of minerals by mining equipment stepwise. At that formation of working sites is made from top downward; moreover steps are made by layer-by-layer extraction and horizontal shift of the mineral to the upper edge of the step and its subsequent throwing along the slope until a working site is formed thus providing safe operation of mining equipment and transport facilities.

EFFECT: creating conditions for safe operation of mining-and-transport equipment at stepwise extraction of minerals at steeply low stratified deposits and increasing efficiency of mining activities.

2 cl, 6 dwg