United Sand and Gravel Pit

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Wikidata
mine, United States, 

​ ​ ​ ​

Location: 39.0703, -108.6103, KML, Cluster Map, Maps,
3 places

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• 

  West Lower Tunnel ⓘ
  

• 

  West Upper Tunnel ⓘ
  

• 

  East Tunnel ⓘ
  

1937-01-01T00:00:00Z

1937-01-01T00:00:00Z

1937 West Lower Tunnel

1937-01-01T00:00:00Z

1937-01-01T00:00:00Z

1937 West Upper Tunnel

1941-01-01T00:00:00Z

1941-01-01T00:00:00Z

1941 East Tunnel

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Type	Subtype	Date	Description	Notes	Source
site	tunnel	1937	West Lower Tunnel	road tunnel	Wikidata
site	tunnel	1937	West Upper Tunnel	road tunnel	Wikidata
site	tunnel	1941	East Tunnel	road tunnel	Wikidata