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mineral · input

J-M Reef PGM Ore — Montana, USA (Sibanye-Stillwater)

The only significant domestic US PGM deposit. Highest-grade PGM reef in the world (~18–20 g/t 2E). Sibanye-Stillwater produced 425,842 oz 2E in 2024. 77% palladium, 23% platinum. National security significance: July 2025 AD/CVD petition against Russian palladium imports won by February 2026.

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Source countries

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Companies

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Goods affected

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Claims on record

What depends on it

Goods that need this input

1 essential American goods rely on j-m reef pgm ore — montana, usa (sibanye-stillwater) somewhere upstream in their supply chain.

Digital

Palladium and platinum group metals

Palladium, platinum, and rhodium used in catalytic converters, electronics multilayer capacitors, fuel cells, and medical devices.

Where it comes from

Source countries

Share of global supply, by country.

CountryShare of supply
USUnited States100%

Who makes it

Supplier companies

1 company produce j-m reef pgm ore — montana, usa (sibanye-stillwater).

Sibanye-Stillwater(SBSW)

HQ ZA100% shareSOLE SUPPLIER

South African mining group; only operator of US PGM mines (Stillwater and East Boulder, Montana); ~15% of SA PGM output; operates Columbus Metallurgical Complex (Montana) for US primary + recycled autocatalyst processing; filed AD/CVD petition against Russian palladium July 2025.

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