Argo Tunnel and Mill

Listed on the National Register of Historic Places in 1978.

From the record

One of 24 National Register listings published here for Clear Creek County · listed in 1978 · category: District.

Sources: the case file at the National Archives · the National Register database, National Park Service

The listing

Address. 2517 Riverside Dr., Idaho Springs, 80452
When was it listed? January 1978
Category. district
Census division. Idaho Springs
National Register reference number. 78000836 - the number the National Park Service assigned this property when it was listed, and the key its nomination file is catalogued under at the National Archives.

Fires near this property

69 since 1993

Regional context, not property-specific evidence. The federal wildfire occurrence database lists 69 fires within 5 miles of Argo Tunnel and Mill between 1993 and 2020, burning about 234 acres in total. 7 started naturally. 2 were 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
Missing data/not specified/undetermined	28
Recreation and ceremony	13
Natural	7
Smoking	6
Equipment and vehicle use	4
Power generation/transmission/distribution	3
Debris and open burning	2
Fireworks	2
Misuse of fire by a minor	2
Arson/incendiarism	2

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
8 September 2020	Equipment and vehicle use	under an acre	Central City Fire Department	N/A
4 September 1993	Recreation and ceremony	under an acre	Arapaho and Roosevelt National Forests and Pawnee National Grassland	not named
17 September 2020	Missing data/not specified/undetermined	under an acre	Clear Creek County Office	FREIGHT STATION
17 September 2019	Recreation and ceremony	under an acre	Arapaho and Roosevelt National Forests and Pawnee National Grassland	BARBOUR FORK
17 September 2005	Equipment and vehicle use	under an acre	Arapaho and Roosevelt National Forests and Pawnee National Grassland	SODA CREEK
9 August 2009	Power generation/transmission/distribution	under an acre	Arapaho and Roosevelt National Forests and Pawnee National Grassland	BALD MOUNTAIN
7 August 1996	Recreation and ceremony	under an acre	Arapaho and Roosevelt National Forests and Pawnee National Grassland	DEVIL
31 August 2020	Smoking	under an acre	Black Hawk Fire Department	N/A

Every fire recorded in Clear Creek County

Mines and quarries near this property

10 of 945 shown

Regional context, not property-specific evidence. The federal mineral resources record lists 945 workings within 5 miles of Argo Tunnel and Mill: 805 past producers, 61 producers, 56 occurrences, 19 unknowns. 62 still produce. What was taken out: Gold, Silver, Copper, Lead, Silver, Zinc, Gold, Silver. Distance is straight-line from the map coordinates, so a quarry counted here may appear on a neighbouring settlement's page as well.

Site	Commodity	Status	Recorded
394357	Silver, Uranium, Vanadium	Past Producer
Ajax	Mica, Feldspar, Quartz	Producer	Feldspar, Mica, Quartz
Ajax Mica Mine	Mica, Feldspar, Quartz	Past Producer
Alma-Lincoln Mine	Gold, Silver, Lead, Copper, Zinc, Uranium	Past Producer	Chalcopyrite, Enargite, Galena, Polybasite, Pyrite, Sphalerite, Tennantite, Gold, Cerussite, Chalcocite, Covellite
Anchor	Molybdenum, Gold, Silver, Copper, Lead, Zinc	Occurrence	Molybdenite, Pyrite, Fluorite
Baltimore-#7391	Copper, Gold, Lead, Silver	Past Producer	1867
Barita-Hill Mine	Zinc, Silver, Lead	Producer	Galena, Silver
Black Bear Mine	Lead, Silver, Gold	Occurrence
Blackhawk District	Tungsten, Gold, Silver, Copper	Producer	COPPER - SILVER - GOLD VEINS, DISSEMINATED
Bonanza	Gold, Copper, Zinc, Lead, Silver, Uranium	Unknown	Pyrite, Chalcopyrite, Sphalerite, Galena, Pitchblende

Every working recorded in Clear Creek County

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

6 within 8 miles

Other 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.

Property	Distance	Listed
Bryan Hose House	0.4 miles	1998
Idaho Springs Downtown Commercial District	0.6 miles	1984
Methodist Episcopal Church	0.6 miles	1998
Hose House No. 2	1.1 miles	1998
Dumont School	5.5 miles	1996
Miner Street Bridge	5.7 miles	1985

Sources for this property

National Archives record	The nomination case file for reference 78000836 in Record Group 79.
Clear Creek County	All 24 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.