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Retreat Surface Area Mining Systems.
NTIS: PB 256 515 Available for Reference At Bureau Libraries :214 pages
Results of a technical/economic feasibility analysis of conceptual "retreat" surface area mining systems are presented. The study determined the engineering feasibility, probable costs, and practicality of conceptual "retreat" area mining systems and compared the conceptual systems with commonly practiced area surface mining techniques. Designs for two retreat mining systems were developed which utilize haulage schemes laid out so far as to reduce or eliminate the number and maintenance of haul ramps through spoil areas. The study determined that, in simple models, the economics of retreat mining are fundamentally unfavorable. However, there are some mining or environmental circumstances under which full retreat or semiretreat mining systems become advantageous.
CP; Final Contract Report;
NTIS Accession No.
NTIS: PB 256 515 Available for Reference At Bureau Libraries
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Page last reviewed: April 12, 2019
Content source: National Institute for Occupational Safety and Health Education and Information Division