Bancroft, George R.

Subjects:

• Assaying
• Batholiths
• Buildings
• Cement plants
• Chromite
• Chromium
• Coal
• Coal mines and mining
• Copper
• Copper mines and mining
• Copper ores
• Dams
• Ditches
• Fluorspar
• Geology
• Gilsonite
• Gneiss
• Gold
• Gold mines and mining
• Gold ores
• Granite
• Graphite
• Graphite industry
• Gravel
• Iron ores
• Irrigation
• Limestone
• Metallurgy
• Mineral industries
• Mines and mineral resources
• Mining claims
• Molybdenum ores
• Nickel mines and mining
• Nickel ores
• Ore deposits
• Ore-dressing
• Ore-dressing
• Ores
• Ores
• Peridotite
• Petroleum
• Placer mining
• Portland cement
• Prospecting
• Quartzite
• Reservoirs
• Runoff
• Soils
• Tungsten ores
• Veins (Geology)
• Water diversion
• Watershed
• Water-supply
• Water tunnels
• Zinc

Occupations:

Places:

• Arizona--Yuma County (as recorded)
• Nevada--Elko County (as recorded)
• Braganza Mine (Colo.) (as recorded)
• Orphan Boy Mine (Colo.) (as recorded)
• Utah--Wasatch County (as recorded)
• Mexico--Sonora (State) (as recorded)
• Wyoming--Albany County (as recorded)
• Wyoming--Albany County (as recorded)
• Idaho--Idaho County (as recorded)
• Colorado--Park County (as recorded)
• California--Inyo County (as recorded)
• Nevada--Nye County (as recorded)
• Tungsten Mining District (Nev.) (as recorded)
• Rolling Mountain Mine (Colo.) (as recorded)
• Antelope Mine (Nev.) (as recorded)
• Colorado--Park County (as recorded)
• Colorado--La Plata County (as recorded)
• Idaho--Owyhee County (as recorded)
• Castle Peak Mine (Utah) (as recorded)
• Wyoming--Albany County (as recorded)
• Grand Pacific Mine (Ariz.) (as recorded)
• Paymaster Mine (Colo.) (as recorded)
• Granite Mountain Mining District (Nev.) (as recorded)
• Colorado--Summit County (as recorded)
• Mammoth Mine (Mexico) (as recorded)
• Nevada--Eureka County (as recorded)
• Elk River (Colo.) (as recorded)
• Arizona--Yavapai County (as recorded)
• Arizona--Yuma County (as recorded)
• Cripple Creek Mining District (Colo.) (as recorded)
• McAffee Mine (Calif.) (as recorded)
• Mexico--Sonora (State) (as recorded)
• Hoag Mining District (Calif.) (as recorded)
• Colorado--Lake County (as recorded)
• Colorado--Park County (as recorded)
• Glendale Mine (Colo.) (as recorded)
• Robbins Mining District (Idaho) (as recorded)
• Wyoming--Goshen County (as recorded)
• Oregon--Douglas County (as recorded)
• Central City Mining District (Colo.) (as recorded)
• Baxter Mine (Utah) (as recorded)
• Colorado--Fremont County (as recorded)
• Colorado--San Juan County (as recorded)
• Colorado--Gilpin County (as recorded)
• Mexico--Sonora (State) (as recorded)
• Buffalo Hump Mining District (Idaho) (as recorded)
• California--Inyo County (as recorded)
• Idaho--Idaho County (as recorded)
• Colorado--Summit County (as recorded)
• Colorado--Jefferson County (as recorded)
• Mexico--Sonora (State) (as recorded)
• Idaho--Idaho County (as recorded)
• Wyoming--Albany County (as recorded)
• Wyoming--Albany County (as recorded)
• Idaho (as recorded)
• Alpha Coal Mine (Colo.) (as recorded)
• California--Calaveras County (as recorded)
• McCoy Mine (Nev.) (as recorded)
• Special Session Mine (Colo.) (as recorded)
• Leadville Mining District (Colo.) (as recorded)
• Colorado--Park County (as recorded)
• Animas Mining District (Colo.) (as recorded)
• Nevada--Lander County (as recorded)
• Colorado--Pitkin County (as recorded)
• California--Modoc County (as recorded)
• Oregon--Grant County (as recorded)
• Wyoming--Albany County (as recorded)
• British Columbia (as recorded)
• Iron Silver Mine (Colo.) (as recorded)
• Snider Mine (Calif.) (as recorded)
• Utah--Grand County (as recorded)
• Gold Fern Mine (Colo.) (as recorded)
• Yak Tunnel (Colo.) (as recorded)
• Arizona--Pinal County (as recorded)
• Idaho--Idaho County (as recorded)
• Nevada--Washoe County (as recorded)
• Colorado--La Plata County (as recorded)
• International Mine (Idaho) (as recorded)
• United States (as recorded)
• Black Oak Mine (Calif.) (as recorded)
• California--Siskiyou County (as recorded)
• Colorado--Pueblo County (as recorded)
• Colorado--Park County (as recorded)
• Colorado--La Plata County (as recorded)
• Nevada--Lander County (as recorded)
• Bull Dog Mine (Colo.) (as recorded)
• Colorado--Teller County (as recorded)
• Nevada--White Pine County (as recorded)
• Colorado--Routt County (as recorded)
• Colorado--San Miguel County (as recorded)
• Dewey Mine (Idaho) (as recorded)
• Mexico--Sonora (State) (as recorded)
• Colorado--San Miguel County (as recorded)
• California--Shasta County (as recorded)
• San Felix Mine (Mexico) (as recorded)
• Idaho--Idaho County (as recorded)
• Colorado--Weld County (as recorded)
• Kurtz-Chatterton Mine (Wyo.) (as recorded)
• Nevada--Eureka County (as recorded)
• California--Mono County (as recorded)
• Chaparral Hill Mine (Calif.) (as recorded)
• Bullfrog Mining District (Nev.) (as recorded)
• Colorado--San Juan County (as recorded)
• Granite Mountain Mining District (Nev.) (as recorded)
• Leadville Mining District (Colo.) (as recorded)
• San Pedro Mine (Mexico) (as recorded)
• Durango Girl Mine (Colo.) (as recorded)
• Mammoth Mine (Calif.) (as recorded)
• Neglected Mine (Colo.) (as recorded)
• Colorado--San Miguel County (as recorded)
• Nevada--Eureka County (as recorded)
• Mexico--Sonora (State) (as recorded)
• Colorado--La Plata County (as recorded)
• Nevada--Clark County (as recorded)
• Colorado--El Paso County (as recorded)
• Silent Friend Mine (Colo.) (as recorded)
• Ravenswood Mining District (Nev.) (as recorded)
• Colorado--Fremont County (as recorded)
• Fortuna Mine (Nev.) (as recorded)
• Creede (Colo.) (as recorded)
• Colorado--Grand County (as recorded)
• Mackinaw Mine (Wash.) (as recorded)
• Colorado--Evergreen (as recorded)
• Utah--Wasatch County (as recorded)
• Malloy Mine (Nev.) (as recorded)
• Mears Mine (Calif.) (as recorded)
• Colorado--Summit County (as recorded)
• Colorado--Teller County (as recorded)
• Colorado--Gilpin County (as recorded)
• California--Tuolumne County (as recorded)
• Mexico--Sonora (State) (as recorded)
• Colorado--Gunnison County (as recorded)
• Iron Springs Mining District (Colo.) (as recorded)
• Creede Mining District (Colo.) (as recorded)
• Fairfax Mine (Colo.) (as recorded)
• Colorado--Boulder County (as recorded)
• Colorado--Jefferson County (as recorded)
• Nevada--Eureka County (as recorded)
• Colorado--Jefferson County (as recorded)
• Weaver Mining District (Ariz.) (as recorded)
• California--Alpine County (as recorded)
• Colorado--Park County (as recorded)
• Idaho Batholith (Idaho and Mont.) (as recorded)
• Colorado--Teller County (as recorded)
• Colorado--Summit County (as recorded)
• Colorado--Fremont County (as recorded)
• Montana--Meagher County (as recorded)
• Colorado--Gilpin County (as recorded)
• Utah--San Juan County (as recorded)
• Alvord Mine (Calif.) (as recorded)
• Washington (State)--Snohomish County (as recorded)
• Big Indian Mine (Utah) (as recorded)
• California--Inyo County (as recorded)
• Nevada--White Pine County (as recorded)
• Shirley Mine (Wyo.) (as recorded)
• Vidler Tunnel (Colo.) (as recorded)
• Nevada--Eureka County (as recorded)
• Colorado--Routt County (as recorded)
• Colorado--Summit County (as recorded)
• Colorado--Mineral County (as recorded)
• Yak Tunnel (Colo.) (as recorded)
• Cripple Creek Mining District (Colo.) (as recorded)
• California--El Dorado County (as recorded)
• Quatsino King Mine (B.C.) (as recorded)
• Colorado--Lake County (as recorded)
• Magma Mine (Ariz.) (as recorded)
• California--Inyo County (as recorded)
• Colorado--Eagle County (as recorded)
• Alvord Mine (Calif.) (as recorded)