Stripping Ratio | Truck | Mining - scribd. This value is the stripping ratio at which the costs of mining and processing the ore and stripping the waste are equal to the revenue from the ore.ore mining cost ($/t) .
Various Methods used for the extraction of coal are broadly categorized under two categories: Conventional Method of Mining; Mechanized Method of Mining; We will discuss these two methods further. Conventional Method of Mining. In this method of mining, the production cycle followed is. Production Cycle=Drilling+ Blasting+Loading …
This method, from an advantage and disadvantage point of view, is a compromise that removes the extreme conditions of the former two stripping methods outlined. Equipment fleet size and labor requirements throughout the project life are relatively constant. CONSTANT STRIPPING RATIO METHOD. CONSTANT STRIPPING RATIO METHOD.
Underground mining refers to methods of making a mineral that is done by creating a tunnel to the location of the mineral.Various kinds of metals can be retrieved through this method such as gold, copper, zinc, nickel, and lead.
The primary ore extracted from contour strip mining is coal. Also called the bench method, contour strip mining is deployed when coal is extracted from a seam or series of seams located at high elevation on a mountainside or hill. To begin contour strip mining, a roadway leading up to the mountain has to be constructed.
4: Increasing stripping ratio method 9. 9.5: Constant stripping ratio method 59530725. The method is a compromise that removes the extreme conditions of the former two methods described.3.Fig.doc 11 8/3/2011 .
Mountaintop removal requires more capital and engineering skill than the contour mining method, but it allows the operator to extract virtually the entire coal seam. Mountaintop removal, which is used increasingly in Appalachia, became possible only after technology evolved and the economics of mining changed to allow greater stripping ratios.