Analysis of the economic feasibility of the Kloswall longwall mining system. Final technical report: volume 1.
Schroder-EW; Davis-RP; Gabrill-C; Gabrill-CP; Pimental-RA; Douglas-WJ
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, Contract C-8915, 1978 Jan; :1-95
This study was performed to evaluate the economic feasibility of the Kloswall longwall mining system. The Kloswall system utilizes a deep web mining concept. It was studied both to determine its own economic efficiency and to compare it to the economic efficiency of conventional longwall and continuous mining systems. A broad-range of mine scenarios and equipment configurations was studied for each mining system. The principal economic factor used in the analysis was Rate of Return on Investment. This factor was derived through a yearly discounted cash flow analysis. An estimated value for yearly Cost per Ton has also been provided. The Kloswall system is shown to be a feasible concept from an economic point-of-view and to provide an economic advantage over conventional longwall systems in seam heights in the range of 6 to 9 feet. This is predicted to be true even if there are relatively large errors in initial cost estimates for the Kloswall equipment. Additionally, by simultaneously considering the nature of equipment cost variations and production rates, the study was able to ascertain optimal longwall mine layouts for the scenarios studied.
Longwall mining; Coal mining; Comparative evaluations; Economic analysis; Feasibility studies; Numerical data; Tables; Underground mining
CP; Final Contract Report
NTIS Accession No.
Analysis of the economic feasibility of the Kloswall longwall mining system. Final technical report: volume 1
Ketron, Inc., Wayne, PA