Ripping of Ores and Overburden
J. E. Curfman Manager, Product - Market 1Division, Caterpillar Americas Co., .Peoria, Ill., U.S.A.
This paper deals with using track-type and rubber-tired machines in the ripping and handling of overburden and ores. The techniques and proper attachments pertaining to the ripping of materials are covered in some detail. Production and relative costs of ripping, as against other methods, are covered in cases pertaining to the mining industry. The use of the refraction seismograph in predetermining the rippability of materials, including a chart relating velocity to rippability, is covered. This operates on the principle that sound waves travel through subsurface materials at different velocities, depending upon the degree of consolidation of the material. It is known that the same factors that affect consolidation also affect rippability. Proper equipping of the tractor to insure maximum efficiency is also covered in some detail.
Construction, Cost, Costs, formation, Materials, mining, Overburden, overburden, ripping, seismograph, shank, tractor, Production, Rock, Rocks