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Modified Longwall Mining of Shallow Coals. Interior Province Coalfield.

Authors
Gales-T
Source
NTIS: PB/264-383 Available for Reference At Bureau Libraries :65 pages
Link
NIOSHTIC No.
10001837
Abstract
Longwall mining of thin shallow coal seams utilizing open pits is technically feasible. The thinnest coal seam which can be mined using available technology is 34 inches. The capital expenditure for a 1,000,000-ton-per-year operation is $15,494,000, and the projected rate of return is 5 percent. Similar statistics for a conventional area surface mine are $18,937,000 capital and 14 percent return rate. The longwall surface mining method disturbs 63 acres of land per 1,000,000 tons, and the conventional area surface mine disturbs 198 acres. A significant bibliography of the technology involved is included.
Publication Date
19760101
Document Type
CP; Final Contract Report;
Fiscal Year
1976
NTIS Accession No.
PB-264383
NTIS Price
A05
Identifying No.
OFR 38-77
NIOSH Division
SRC;
Source Name
NTIS: PB/264-383 Available for Reference At Bureau Libraries
Performing Organization
Gates Engineering Company
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