Skip directly to search Skip directly to A to Z list Skip directly to page options Skip directly to site content

NIOSHTIC-2 Publications Search

Search Results

Dust Deposition in Coal Mine Airways.

Authors
Courtney-WG; Kost-JA; Colinet-JF
Source
MISSING :15 pages
Link
NIOSHTIC No.
10002278
Abstract
The Bureau of Mines conducted an exploratory field survey to determine the amount of airborne coal dust, the size distribution of the dust, and the rate of dust deposition in coal mine airways. The survey was taken at eight underground locations in operating coal mines. The rate of dust deposition in the airways depended upon the concentration of airborne dust and decreased exponentially with distance from the dust source. The rate was seemingly independent of the size of the airborne dust particles. The rate of deposition, along a return, for the coal dust from a face being mined with a continuous mining machine closely matched the rate for the rock dust from a trickle duster. A sample rock-dusting schedule for that return is presented; that is, the trickle duster should be operated for 3 1/2 hours after every five shifts to protect the average deposit of new float coal dust in the return, but operation after every three shifts is preferred, to protect an occasional heavier deposit.
Publication Date
19820101
Document Type
IH;
Fiscal Year
1982
NTIS Accession No.
NTIS Price
Identifying No.
TPR 116
NIOSH Division
PRC;
Source Name
MISSING
TOP