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Retreat Surface Area Mining Systems.

Authors
Anonymous
Source
NTIS: PB 256 515 Available for Reference At Bureau Libraries :214 pages
Link
NIOSHTIC No.
10008092
Abstract
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.
Publication Date
19760101
Document Type
CP; Final Contract Report;
Fiscal Year
1976
NTIS Accession No.
PB-256515
NTIS Price
A11
Identifying No.
OFR 93-76
NIOSH Division
DRC;
Source Name
NTIS: PB 256 515 Available for Reference At Bureau Libraries
Performing Organization
Pdncb Consultants Ltd
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