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The Geologic Character of Some Coal Wants At the Westland Mine in Southwestern Pennsylvania.

Authors
Moebs-NN
Source
MISSING :25 pages
Link
NIOSHTIC No.
10002051
Abstract
The coal wants at the westland mine in southwestern Pennsylvania consist chiefly of elongated, sandstone-filled channels with slickensided basal contacts. Tentatively identified as washouts, these channels are about 1,000 feet long and 300 feet wide, are erratic in occurrence and trend, and are difficult to delineate from the customary core drilling pattern. Roof conditions are hazardous adjacent to the washout contact, but roof stability is generally unaffected greater than 30 feet away.
Publication Date
19810101
Document Type
IH; Report of Investigations
Fiscal Year
1981
NTIS Accession No.
NTIS Price
Identifying No.
RI 8555
NIOSH Division
PRC;
Source Name
MISSING
State
PA;
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