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Use of geophone in locating compressed-air leaks

Published Year

• 1920-1929 (1)

Subject

• Compressed air (1)
• Compressed air--Safety measures (1)
• Geophone (1)
• Mine ventilation (1)
• Mines and mineral resources--Equipment and supplies (1) *
• Mines and mineral resources--Equipment and supplies--Maintenance and repair (1)

Author

• Pickard, Byron O., (1) *

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