Dilworth, Washington

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.

• 1897 USGS Tacoma quadrangle1:125000, 2 printings
• 1900 USGS Tacoma quadrangle1:125000, 9 printings
• 1949 USGS Vashon quadrangle1:24000, 4 printings
• 1958 USGS Seattle quadrangle1:250000, 3 printings
• 1962 USGS Seattle quadrangle1:250000
• 1975 USGS Tacoma quadrangle1:100000
• 1983 USGS Burien quadrangle1:25000
• 1991 USGS Tacoma quadrangle1:100000
• 1997 USGS Vashon quadrangle1:24000

Regional context, not property-specific evidence. The federal mineral resources record lists 4 workings within 5 miles of Dilworth: 2 past producers, 1 producer, 1 occurrence. 1 still produces. What was taken out: Sand and Gravel, Construction, Diatomite. 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 King 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 1510915. 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.

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.