Copper Converter at Anaconda Smelter September 1942

This vintage image showcases the copper converter at the Anaconda smelter in Anaconda, Montana, from September 1942. The converters processed molten copper by blowing compressed air to eliminate sulfur and iron. Silica was added to create slag, enabling efficient extraction. Anaconda Copper Mining Company operated this key facility in 20th-century copper production.

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