The federal record (USGS MRDS) lists 225 gold occurrences in San Miguel County — 149 of them past or active producers. Below is that record, readable: the documented sites, and the live map that puts claims, creeks, roads and geology under every one of them.
Open the San Miguel County gold map → Membership — first week free
Producers first, then prospects and occurrences — each links into the live map of that exact ground:
| Site | Status | Type |
|---|---|---|
| A1 | Past producer | — |
| Ajax | Past producer | — |
| Allegheny | Past producer | — |
| Alta Mine | Past producer | — |
| American Frenchman | Past producer | — |
| Argentine Mine | Past producer | — |
| Atlanta Tunnel | Past producer | — |
| Atlas | Past producer | — |
| Badger Mine | Past producer | — |
| Bay State Tunnel | Past producer | — |
| Black Diamond | Past producer | — |
| Black Hawk Tunnel | Past producer | — |
| Black King Mine | Past producer | — |
| Bootjack | Past producer | — |
| Boston and Navite | Past producer | — |
| Bullion Tunnel | Past producer | — |
| Butterfly Mill | Past producer | — |
| Butterfly No. 3,4 | Past producer | — |
| Calamine | Past producer | — |
| Carbonero Mine | Past producer | — |
| Caribou Mill | Past producer | — |
| Carribeau Mine | Past producer | — |
| Cascade Tunnel | Past producer | — |
| Cimarron Mine | Past producer | — |
| Cincinnati Shaft | Past producer | — |
| Colorado | Past producer | — |
| Columbia Tun | Past producer | — |
| Commercial Mine | Past producer | — |
| Court House-Dynamo | Past producer | — |
| Crescent City | Past producer | — |
Showing the top 30 of 225 recorded gold occurrences — every one is on the live map.
The free map shows every dot above. Membership opens the layers that turn dots into a plan — favorability at working zoom, active claims, land ownership, geology and the creeks that drain the known sources. The first 7 days are free.
The dots are the record. The method is how you read them: