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Drawing For Flotation Of An Ore

US1852481A US405865A US40586529A US1852481A US 1852481 A US1852481 A US 1852481A US 405865 A US405865 A US 405865A US 40586529 A US40586529 A US 40586529A US 1852481 A US1852481 A US 1852481A Authority US United States Prior art keywords mixture emulsion flotation lime sulphide Prior art date 19291109 Legal status The legal status is an assumption and is not a

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