BlockFrom the record
One of 6 National Register listings published here for San Juan County · listed in 2020 · category: Building.
Sources: the National Register database, National Park Service
Frisco-Bagley Mine and Tunnel
Listed on the National Register of Historic Places in 2020.
The listing
- Address. 820 Cty Rd. 9, Silverton, 81433
- When was it listed? June 2020
- Category. building
- Also known as. Mining Industry in Colorado, MPS; Mining Resources of San Juan County, Colorado MPS
- Census division. Silverton
- National Register reference number. 100005235 - assigned by the National Park Service when the property was listed.
Fires near this property
1 since 2015Regional context, not property-specific evidence. The federal wildfire occurrence database lists 1 fire within 5 miles of Frisco-Bagley Mine and Tunnel in 2015, burning under an acre in total. None started naturally. None was recorded as arson. Distance is straight-line from the map coordinates, so a fire counted here may appear on a neighbouring settlement's page as well.
| Reported cause | Fires |
|---|---|
| Recreation and ceremony | 1 |
The most recent of them, most recent first, with the day each was reported and the service that recorded it.
| Date | Cause | Size | Reported by | Name on the report |
|---|---|---|---|---|
| 26 September 2015 | Recreation and ceremony | under an acre | Southwest District, Montrose | PALMETTO |
Mines and quarries near this property
10 of 338 shownRegional context, not property-specific evidence. The federal mineral resources record lists 338 workings within 5 miles of Frisco-Bagley Mine and Tunnel: 167 past producers, 65 occurrences, 53 unknowns, 51 producers. 52 still produce. What was taken out: Gold, Silver, Lead, Zinc. Distance is straight-line from the map coordinates, so a quarry counted here may appear on a neighbouring settlement's page as well.
| Where | Site | Commodity | Status | Recorded |
|---|---|---|---|---|
| Acapulca | Bismuth, Lead, Silver, Zinc, Gold | Past Producer | ||
| Alabama | Silver, Gold, Lead, Zinc | Past Producer | ||
| American Flats-Eng. Mtn. Dist. | Gold, Lead, Copper, Zinc, Silver | Producer | ||
| Belcher Tun No.1 | Lead, Silver, Zinc, Gold | Past Producer | ||
| Ben Butler | Silver, Gold, Copper, Lead | Past Producer | ||
| Bill Young Group | Silver, Zinc, Gold, Lead | Past Producer | ||
| Black Diamond | Lead, Silver, Copper | Occurrence | Tetrahedrite | |
| Bon Homme Tunnel | Copper, Silver, Lead, Bismuth, Zinc | Past Producer | 1885, 1974 | |
| Bonanza King | Silver, Gold, Copper | Producer | Chalcopyrite, Galena, Sphalerite | |
| Dewitt | Zinc, Silver, Copper, Lead | Producer |
Storms near this property
6 since 1996Regional context, not property-specific evidence. The National Weather Service names Silverton, the town this property stands in, in 6 storm reports between 1996 and 2021: 4 flash flood, 1 lightning, 1 debris flow. The reports record 4 injuries. Each account below is quoted exactly as the forecast office filed it, from the NOAA Storm Events Database, and each date opens the federal record of that event.
| When | Event | Place named | Harm | What the report says |
|---|---|---|---|---|
| August 1996 | Lightning | Silverton | 4 hurt | no account filed |
| August 1999 | Flash Flood | Silverton | $10,000 | no account filed |
| July 2007 | Flash Flood | Silverton | $5,000 | Heavy convective rainfall concentrated just north of the La Plata and San Juan County line produced a massive flow of water, rock, and mud which traveled across the Durango to Silverton Narrow Gage Railroad track and dammed up the Animas River about one mile north of Needleton. Initially, the entire river channel was dammed. The river bed at that location was raised 8 feet on the east side of the channel and remained blocked on the west side of the channel. The debris flow covered about 250 feet of railroad track. The peak depth of debris on the railroad track was measured at close to 45 feet. The railroad track did not sustain significant damage, because the lowest several feet of debris on the track consisted primarily of mud. On top of the mud was a lot of rock material with some trees mixed in it. |
| August 1999 | Flash Flood | Silverton | $2,000 | no account filed |
| July 2021 | Debris Flow | Silverton | - | A debris flow occurred as a result of heavy rain over Ophir Pass in the Southwest San Juan Mountains. Social media footage showed a combination of rock and mud across the pass with cars having to turn around as a result of the debris flow. |
| July 1999 | Flash Flood | Silverton | - | no account filed |
Map coverage status
No historic map-sheet match is published for this property yet. That does not mean no map exists. This record needs a coordinate-quality review before it can be joined to a sheet boundary. Browse the county's mapped places while that work is pending.
Listed places nearby
2 within 8 milesOther National Register properties close enough to walk or drive between, ordered by distance from this one. Both positions come from the same geocoding pass that matched these properties to their map sheets.
| Photograph | Property | Distance | Listed |
|---|---|---|---|
| Martin Mining Complex | 3.3 miles | 2004 | |
 | Shenandoah-Dives Mill | 7.6 miles | 2000 |
Sources for this property
| National Archives record | The nomination case file for reference 100005235 in Record Group 79. |
| San Juan County | All 6 listed properties in this county. |
Provenance
- Listing record. National Park Service National Register of Historic Places, listed-properties dataset, current to 2026-05-22.
- Map join. Address geocoded through the United States Census geocoder, then tested against the published boundary of every sheet in the USGS Historical Topographic Map Collection.
- How this page is made. Listing fields come from federal records; map-sheet coverage is a labelled coordinate-to-boundary calculation, not a source-field claim.
- Wildfire. Short, Karen C. 2022. Spatial wildfire occurrence data for the United States, 1992-2020 [FPA_FOD_20221014]. 6th Edition. Fort Collins, CO: Forest Service Research Data Archive. https://doi.org/10.2737/RDS-2013-0009.6 Collected with United States Government funding and usable without additional permissions or fees.
- Mines and quarries. USGS Mineral Resources Data System (MRDS) https://mrdata.usgs.gov/mrds/ A work of the United States government, no copyright under 17 U.S.C. 105.
- Storms. NOAA National Centers for Environmental Information, Storm Events Database https://www.ncei.noaa.gov/stormevents/ A work of the United States government, no copyright under 17 U.S.C. 105. Narratives are quoted verbatim from the National Weather Service report and are not edited or summarised.