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Foam Suppression of Respirable Coal Dust.

Authors
Salyer-IO; Sun-SM; Schwendeman-JL; Wurstner-AL
Source
NTIS: PB/204-522 Available for Reference At Bureau Libraries :55 pages
Link
NIOSHTIC No.
10000134
Abstract
With the objective of suppressing respirable dust in coal mines by foam application, a formulation was developed for making a water- based, high-expansion, and limited stability foam. A horizontal boring machine was used as a laboratory coal mining model for generating coal dust. A modified laboratory foam generator was built. Foam was applied directly to the point at which dust was being formed by the cutter of the boring machine working against a block of coal. Coal dust was sampled with an impinger and analyzed for the particle count and particle size distribution. Coal dust suppression test results on freshly generated dust have demonstrated very clearly that, in laboratory scale experiments, over 90 percent of the respirable coal dust can be suppressed by foam. These tests were run when initial coal dust concentrations were 10 and 70 million particles per cubic foot.
Publication Date
19700101
Document Type
CP; Final Contract Report;
Fiscal Year
1970
NTIS Accession No.
PB-204522
NTIS Price
A05
Identifying No.
OFR 10-71
NIOSH Division
PRC;
Source Name
NTIS: PB/204-522; Available for Reference At Bureau Libraries
Performing Organization
Monsanto Research Corp.
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