Keystone, Montana

Matched by testing this settlement's coordinate against the published boundary of every sheet in the United States Geological Survey's historical collection. Each opens the scanned sheet at the Survey.

• 1956 USGS Wallace quadrangle1:250000, 3 printings
• 1959 USGS Plains quadrangle1:62500, 2 printings
• 1960 USGS Wallace quadrangle1:250000
• 1985 USGS Keystone Peak quadrangle1:24000
• 1999 USGS Keystone Peak quadrangle1:24000

Regional context, not property-specific evidence. The federal wildfire occurrence database lists 216 fires within 5 miles of Keystone between 1992 and 2020, burning about 6,687 acres in total. 114 started naturally. 3 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.

The most recent of them, most recent first, with the day each was reported and the service that recorded it.

Settlements close enough to share some of these fires:

• Spring Gulch
• Hopkins
• Superior
• Amador (historical)
• Cedar Mouth (historical)
• Oliverville

Every fire recorded in Mineral County

Regional context, not property-specific evidence. The federal mineral resources record lists 40 workings within 5 miles of Keystone: 14 occurrences, 10 past producers, 9 unknowns, 6 producers. 6 still produce. What was taken out: Silver, Lead, Lead, Zinc, Gold. Distance is straight-line from the map coordinates, so a quarry counted here may appear on a neighbouring settlement's page as well.

Every working recorded in Mineral County

The eight closest, with where each one stands in the county. Distances are straight-line, computed from the Geographic Names Information System coordinates.

This settlement is recorded in the Geographic Names Information System as feature 785703. The sheet list is computed by point-in-boundary test against the United States Geological Survey's historical topographic inventory. Both are works of the United States government and carry no copyright under 17 U.S.C. 105.

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.