<p>Pillar design is the first line of defense against rock falls&mdash;the greatest single safety hazard faced by underground coal miners in the United States and abroad. To help advance the state of the art in this fundamental mining science, the National ...

Stope design in Canadian hard rock mines is often carried out using the Stability Graph Method. However, this method does not account for the low confinement measured around stopes or quantify the amount of dilution associated with stope caving. A new approach ...

The mining rock-mass rating (MAMA) classification system was introduced in 1974 as a development of the CSIA geomechanics classification system to cater for diverse mining situations. The fundamental difference was the recognition that in situ rock-mass ratings ...

This guide describes some engineering practices and methods generally considered satisfactory for the design, construction, and inspection of earth and rockfill embankments used for retaining uranium mill tailings.

The valuation of dianlondiferous deposits depends on (i) the density distribution, (ii) the size distribution of stones and (iii) the selling price structure prevailing at a particular time. In the density distribution the stochastic variable is defined as ...

The paper deals with the improved mining design method for Estonian oil shale mines, where the room-and-pillar mining system is used. Design of mining block parameters is based on the instruction used in Estonian oil shale mines. The factor of safety is very ...

During the latter half of the 1970's the attention of the public, regulatory authorities and industry focused on the environmental impact of uranium and other mine wastes. This focus resulted in the intense evaluation of existing mine waste disposal methods ...