Category:Mines opened in 1921

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Mines opened in the 1920s : ←; 1920; 1921; 1922; 1923; 1924; 1925; 1927; 1929; →

See also category: Mines closed in 1921.

Subcategories

This category has only the following subcategory.

Mines in Germany opened in 1921‎ (3 C)

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