Template:Mines opened Lower Saxony Decade

Federal states of Germany:

[[:Category:Mines in Lower Saxony opened in the {{{3}}} century|Mines in Lower Saxony opened in the {{{3}}} century]]: ◀ · 0s · 10s · 20s · 30s · 40s · 50s · 60s · 70s · 80s · 90s · ▶