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oil shale mining machines

oil shale mining machines

OIL SHALE MINING MACHINE Filed March 16 1946 5 SheetsSheet 1 N JGQFznJZaZer Jan 31 1950 HNDLATER 2495840 OIL SHALE MINING MACHINE Filed March 16 1946 5 SheetsSheet 2 111 IIIIIFVIIH n i cfZfznilaie r Mom mugs Jan 31 1950 J G FINDLATER OIL SHALE MINING MACHINE 5 SheetsSheet 3 Filed March 16 1946 jwucnfwo 0 QFzndlaikr 7

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