Details:

Personal Author:
Cetinbas, Adburrahman.
Corporate Authors:
United States. Bureau of Mines. ; Island Creek Coal Company.
United States. Bureau of Mines. ; Island Creek Coal Company. Less -
Description:
"The periphery of longwall panels in the Pocahontas No. 3 Coalbed is characterized by a zone of reduced permeability that inhibits the natural drainage of methane. A residual gas pressure of 105 psig was measured after 1 year in an isolated block of coal measuring 340 by 1,100 feet. The buildup of gas pressure within such large blocks causes methane problems during plowing operations. However, natural drainage holes drilled during development have been found to reduce the gas content of the coal in this coalbed by over 90 percent. The effect of water infusion on dust during plowing operations was investigated using existing methane drainage holes. These holes were cleaned of debris and a pipe was grouted into the hole for water infusion of the panel. Both total and respirable dust levels were reduced by 40 to 79 percent. Water infusion of the panel proved more effective than did the use of a plow-mounted spray system. Work done in cooperation with the Island Creek Coal Company." - NIOSHTIC-2

NIOSH no. 10000712


Subject:
[+]
Coal Mines And Mining -- Dust Control.
Methane.
Mine Dusts.

Series:
Report of investigations (United States. Bureau of Mines) ; 7849
Document Type:
Report
Place as Subject:
Virginia
Collection(s):
National Institute for Occupational Safety and Health
Main Document Checksum:
[+]
urn:sha256:7a643f4f7e4d2aac4bdfa1a1a3b74b580cea866a522ab49cf33247884c454f18
File Type:

Supporting Files

• No Additional Files

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