Helmer Lime Quarry
From Underfoot
Q49417951
mine in Douglas County, Colorado, United States of America
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Location: 39.4364, -105.0703, KML, Cluster Map, Maps,
1 places
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Bradford House II ⓘ
rock shelter in Jefferson County, Colorado
| Type | Subtype | Date | Description | Notes | Source |
|---|---|---|---|---|---|
| organisation | club | 1957 | Society for Mining, Metallurgy, and Exploration | metallurgy, mining, mineral exploration, learned society | Wikidata |
| site | cave | Bradford House II | rock shelter, archaeological site | Wikidata | |