Polack, S. P.; Smith, A. F.; Barthe, H. P.
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Recent Developments in Fire-Resistant Hydraulic Fluids for Underground Use.
Bureau of Mines, Pittsburgh, PA
IC 8043,
1961,
35 p.
Smith, A. C.; Barthe, H. P.; Polack, S. P.
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Effects of Hydraulic Fluids in Spontaneous Heating of Coal.
Bureau of Mines, Pittsburgh, PA
RI 6221,
1963,
19 p.
Mitchell, D. W.; Murphy, E. M.; Smith, A. F.; Polack, S. P.
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Fire Hazard of Conveyor Belts.
Bureau of Mines, Pittsburgh, PA
RI 7053,
December 1967,
19 p.