Category:Mines opened in the 1920s

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Mines opened in the 20th century: ◀ · 1900s · 1910s · 1920s · 1930s · 1940s · 1950s · 1960s · 1970s · 1980s · 1990s · ▶
 See also category: Mines closed in the 1920s.

Subcategories

This category has the following 9 subcategories, out of 9 total.

 

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