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Application of Weathering Protection At the Face.

Authors
McHuron-DC
Source
NTIS: PB/81-223380 :50 pages
Link
NIOSHTIC No.
10002140
Abstract
Many underground coal mines are composed of shale layered directly over the coal that weathers severely immediately after exposure to the mine atmosphere. Condensation of ventilating air causes underground coal mines to become wet during warm months; during cool months, the mines become dry from evaporation. The fluctuating mine atmosphere is responsible for the severe shale break-up experienced during the summer and lessening of the break-up through the winter months. The objective of this investigation was to design and construct spray equipment to be mounted on a continuous miner for sealing the mine roof immediately after exposure. Selection of the sealant and a field evaluation of the equipment is included.
Publication Date
19800101
Document Type
CP; Final Contract Report;
Fiscal Year
1980
NTIS Accession No.
PB81-223380
NTIS Price
A04
Identifying No.
OFR 71-81
NIOSH Division
SRC;
Source Name
NTIS: PB/81-223380
Performing Organization
Mb Associates, Inc.
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