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Design, Development and Demonstration of a Technique to Water-flush the Bits on a Fixed Drum Continuous Mining Machine.
Kost-JA; Du Breuil-F; Saltsman-RD
NTIS: PB/259-207 Available for Reference At Bureau Libraries :119 pages
Control of the dust produced by continuous-mining machines in coal mines is conventionally attained by water sprays from fixed nozzles mounted on the frame of the machine behind the cutting head. In the tests conducted under this contract a so-called "wet-head" machine was used, where the spray nozzles were mounted on the rotating head itself, close to the coal-cutting bits. The tests were conducted at the Robena Mine of U.S. Steel Corp., using Lee-Norse machines. Operating the wet-head machine and a conventional spray machine in turns in the same section, the wet-head produced approximately 25 pct less respirable dust and 60 pct less total airborne dust than the conventional spray machine. The wet-head also greatly improved the visibility of the cutting bits from the machine operator's position.
CP; Final Contract Report;
NTIS Accession No.
NTIS: PB/259-207 Available for Reference At Bureau Libraries
Bituminous Coal Res. Inc.
Page last reviewed: March 11, 2019
Content source: National Institute for Occupational Safety and Health Education and Information Division