National Technical Reports Library

The National Technical Information Service acquires, indexes, abstracts, and archives the largest collection of U.S. government-sponsored technical reports in existence. The NTRL offers online, free and open access to these authenticated government technical reports. Technical reports and documents in its repository may be available online for free either from the issuing federal agency, the U.S. Government Publishing Office’s Federal Digital System website, or through search engines.

Details

PB86216587

Publication Date	1982
Personal Author	Burkes, J. M.
Page Count	127
Abstract	The Federal Coal Mine Health and Safety Act of 1969 established maximum airborne respirable dust exposure levels for underground coal mines. In an effort to provide the knowledge needed to achieve compliance without reducing productivity, the Bureau of Mines has sponsored research oriented toward improving mining machines. The work has consistently shown that a deep-cutting, low-rpm (revolutions per minute) continuous miner can reduce respirable dust levels without production penalties. To provide the design data by manufacturers to produce production versions of the deep-cutting machine, a prototype miner was instrumented and in-mine tests were conducted. The data acquisition system developed for the testing allowed real-time monitoring of selected machine parameters to include cutterhead bit forces, power levels, structural loads, and pressures.
Keywords	Coal mines Mining equipment Cutting tools Mining research Dust control Drilling machines(Tools) Mine ventilation Underground mining Tests
Source Agency	Bureau of Mines
NTIS Subject Category	48A - Mineral Industries
Corporate Authors	Southwest Research Inst., San Antonio, TX.; Bureau of Mines, Washington, DC.
Supplemental Notes	Sponsored by Bureau of Mines, Washington, DC.
Document Type	Technical Report
Title Note	Mining research contract rept.
NTIS Issue Number	198621
Contract Number	H0282029

Instrumented In-Mine Testing of the Bureau of Mines Low-RPM (Revolutions Per Minute) Deep-Cutting Continuous Mining Machine.

Instrumented In-Mine Testing of the Bureau of Mines Low-RPM (Revolutions Per Minute) Deep-Cutting Continuous Mining Machine.
PB86216587

Publication Date	1982
Personal Author	Burkes, J. M.
Page Count	127
Abstract	The Federal Coal Mine Health and Safety Act of 1969 established maximum airborne respirable dust exposure levels for underground coal mines. In an effort to provide the knowledge needed to achieve compliance without reducing productivity, the Bureau of Mines has sponsored research oriented toward improving mining machines. The work has consistently shown that a deep-cutting, low-rpm (revolutions per minute) continuous miner can reduce respirable dust levels without production penalties. To provide the design data by manufacturers to produce production versions of the deep-cutting machine, a prototype miner was instrumented and in-mine tests were conducted. The data acquisition system developed for the testing allowed real-time monitoring of selected machine parameters to include cutterhead bit forces, power levels, structural loads, and pressures.
Keywords	Coal mines Mining equipment Cutting tools Mining research Dust control Drilling machines(Tools) Mine ventilation Underground mining Tests
Source Agency	Bureau of Mines
NTIS Subject Category	48A - Mineral Industries
Corporate Authors	Southwest Research Inst., San Antonio, TX.; Bureau of Mines, Washington, DC.
Supplemental Notes	Sponsored by Bureau of Mines, Washington, DC.
Document Type	Technical Report
Title Note	Mining research contract rept.
NTIS Issue Number	198621
Contract Number	H0282029