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Stillwater and East Boulder Platinum and Palladium Mine, Montana, USA

Producer of

Platinum and palladium

Location

Montana, USA

Ownership

Sibanye-Stillwater

Geology type

Archaean mafic / ultramafic layered complex

Mineral type

Platinum group metals associated with sulphide minerals

Reserve base

Stillwater - 26.8Mt grading 19.4g/t Pt + Pd (2019); East Boulder – 21.5MtMt grading 14.7g/t Pt + Pd (2019)

Annual production

593,974oz of Pd+Pt (2019)

Mining method

Underground manual, mechanised 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

Contractors

Thyssen Mining Construction of Canada
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