.... Then the collapsed rock material partially fills the open cavity, mainly through material sloughing off of the chamber walls. As a result, a stope space emerges under the limestone, having in section a trapezoid form with the larger base in- verted relative to the limestone (the fourth stage). The vertical section...

... consist of lami- nated limestone that is highly fractured and jointed due to activity of faults and geological stresses. A classification chart based on the above equation was also proposed for quick evaluation of the rock mass quality and deformability. The application of the de- rived equation together...

... and especially highly abrasive material such as quartz and non abrasive material such as limestone. This chart allows the classification of different materials using the background of tool wear and drillability problems. Applied in the correct framework of geological and geotechnical investigations, the LCPC...

... the shoulder of Lava Butte and the steeply dipping limestone slope of the Horse Spring Formation (Figs. 1-2). The new power line parallels the line operated by LADWP. Howev- er, because the present power line occupies prime terrain in the pass tower pad HAMD 24/1 and access road had to be constructed...