Domtar mine

The Domtar Mine, formed from the consolidation of Grand Rapids Gypsum Company mines 1 & 2, is an inactive underground gypsum mine in Walker, a suburb of Grand Rapids, Michigan.

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Wikidata
mine, United States, 

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Location: 42.9, -85.7, KML, Cluster Map, Maps,
1 places

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  Grand Rapids Medical Corridor North Pedestrian Tunnel ⓘ
  tunnel in Grand Rapids, Michigan

Frameless

Type	Subtype	Date	Description	Notes	Source
site	tunnel		Grand Rapids Medical Corridor North Pedestrian Tunnel	pedestrian tunnel	Wikidata