The feasibility of utilizing a sensitized pick to discriminate between cutting coal and roof material during the longwall mining process was investigated. A conventional longwall mining pick was instrumented and cutting force magnitudes were determined for a variety of materials, including Illinois #6 coal, shale type materials, and synthetic coal/shale materials
The cost of mining coal using a room pillar mining method with continuous miner and a longwall minin...
The need to evaluate mechanical performance of mine tools and to obtain test performance data from c...
"This report describes laboratory studies by the U.S. Bureau of Mines to determine the suitability o...
One approach for detection of the coal interface is measurement of the pick cutting hoads and shock ...
Because of the volume of coal produced by strip mining, the proximity of mining operations, and the ...
New fundamental interface sensor concepts were identified and investigated including tabulation of t...
The capability of a natural background sensor for measuring the thickness of top coal on a longwall ...
The longwall guidance and control (G&C) system was evaluated to determine which systems and subsyste...
In order to increase the operating margins of the detector for safe, reliable operation under diffic...
To demonstrate the feasibility of acquiring various surface samples for a Mars sample return mission...
The design of two systems which reference the position of a longwall shearer coal miner to the mine ...
A device whereby water jets can be used to detect the interface between coal and the overlying roof ...
The author has identified the following significant results. This investigation evaluated the applic...
Geologic characteristics of coal resources which may impact new extraction technologies are identifi...
An optical device for following the cut in mining operations is described, and the results of accept...
The cost of mining coal using a room pillar mining method with continuous miner and a longwall minin...
The need to evaluate mechanical performance of mine tools and to obtain test performance data from c...
"This report describes laboratory studies by the U.S. Bureau of Mines to determine the suitability o...
One approach for detection of the coal interface is measurement of the pick cutting hoads and shock ...
Because of the volume of coal produced by strip mining, the proximity of mining operations, and the ...
New fundamental interface sensor concepts were identified and investigated including tabulation of t...
The capability of a natural background sensor for measuring the thickness of top coal on a longwall ...
The longwall guidance and control (G&C) system was evaluated to determine which systems and subsyste...
In order to increase the operating margins of the detector for safe, reliable operation under diffic...
To demonstrate the feasibility of acquiring various surface samples for a Mars sample return mission...
The design of two systems which reference the position of a longwall shearer coal miner to the mine ...
A device whereby water jets can be used to detect the interface between coal and the overlying roof ...
The author has identified the following significant results. This investigation evaluated the applic...
Geologic characteristics of coal resources which may impact new extraction technologies are identifi...
An optical device for following the cut in mining operations is described, and the results of accept...
The cost of mining coal using a room pillar mining method with continuous miner and a longwall minin...
The need to evaluate mechanical performance of mine tools and to obtain test performance data from c...
"This report describes laboratory studies by the U.S. Bureau of Mines to determine the suitability o...
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