Stillwater / East Boulder Platinum and Palladium Mines, MT, USA
Key Data:
Producer of
Platinum and palladium
Location
Montana, USA
Ownership
Stillwater Mining Co. (100%)
Geology type
Archaean mafic / ultramafic layered complex
Mineral type
Platinum group metals associated with sulphide minerals
Reserve base
Stillwater - 16.4Mt grading 21.6g/t Pt + Pd (2005); East Boulder - 21.7Mt grading 18.2g/t Pt + Pd (2005)
Annual production
554,000oz of Pd+Pt (2005)
Mining method
Underground manual, ramp-and-fill and sublevel stoping
Processing method
Crushing, grinding and flotation to recover a sulphide concentrate; subsequent smelting to produce matte for further refining
Employment
1,600
Key Equipment:
Underground
Robbins TBMs
Alimak raising equipment
Terratec raise borer
Contractors
Thyssen Mining Construction of Canada
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Norcast - Abrasion resistant Mill and Crusher Liners and Conical-Shaped Grinding Media
REMA TIP TOP - Conveyor Belt Maintenance, Wear and Corrosion Protection
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