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7 results returnedPreliminary evaluation of bit impact ignitions of methane using a drum-type cutting head
Bureau of Mines coal cutting technology facilities at the Twin Cities Research Center
Conical bit rotation as a function of selected cutting parameters
Bit wear-flat temperature as a function of depth of cut and speed
Published Year
Subject
- Bits (Drilling and boring)--Testing (1)
- Boring (1)
- Coal mines and mining--Dust control (1)
- Coal mines and mining--Pennsylvania--Safety measures (1)
- Coal mines and mining--Research--United States (1)
- Coal mines and mining--Safety measures (1)
- Coal-cutting bits--Testing (1)
- Coal-cutting machinery--Testing (1)
- Coal-mining machinery--Safety measures (1)
- Coal-mining machinery--Testing (1)
- Drag bits (Drilling and boring)--Testing (1)
- Geology--Pennsylvania (1)
- Ground penetrating radar (1)
- Methane--Combustion--Testing (1)
- Mining machinery--Design and construction (1)
- Rock mechanics (1)
- Rock-drills--Testing (1)
- Rocks--Electric properties--Pennsylvania (1)
- Sandstone (1)
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