Brunswick smelter employs traditional sinter and blast furnace technology to process lead-silver concentrates and a wide range of recycled materials. The facility also operates a lead-acid battery recycle plant and the bulk-handling port terminal for importing and exporting concentrates and other materials.

The smelter first opened in 1966 as a lead and zinc facility and was later modified to a lead-only facility with capability to treat lead-silver concentrates and a range of recycled materials. The bulk-handling and battery-breaker facilities were commissioned in 1996. The growth in custom smelting prompted the addition of a new blast furnace in 1999 and a silver refinery in 2000.