Title:
Coal dust removal and conveyance system
United States Patent 3387889
Inventors:
Ziemba, Stanley C.
Ziemba, Josephine A.
Publication Date:
06/11/1968
Export Citation:
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Primary Class:
299/12
Other Classes:
55/385.5, 55/442, 96/299, 175/206, 261/94, 261/115, 299/68
International Classes:
E21C35/22; E21C35/00
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US Patent References:
3333896Method and apparatus for rock dusting during coal mining operations
3005627Tunneling machine having suction exhaust means
2740609Apparatus for the removal of cuttings from drill holes
2375689Apparatus for mining coal
2100178Coal mining machine