Blasting crew going into ore vein with horizontal drill. Mahoning pit,...
Picryl description: Public domain photograph of farming, farmer, agriculture, 20th-century, free to use, no copyright restrictions.
Blasting crew going into ore vein with horizontal drill. Mahoning pit,...
Picryl description: Public domain photograph of farming, farmer, agriculture, 20th-century, free to use, no copyright restrictions.
Starkville, Colorado: Digging coal half mile underground (vein 4 ft. t...
H64972 U.S. Copyright Office. Copyright 1905 by H.C. White Co. No. 12425. No copyright renewal. This record contains unverified, old data from caption card. Caption card tracings: Geogr.; Mines; Industry Coal; Ph. Ind.
White blood corpuscles, exhibiting amoeboid movements in the external ...
Illus. in: Report to the surgeon general, of the United States Army, on certain points connected with the histology of minute blood vessels / Brevet Lieutenant Colonel J.J. Woodward, Assistant Surgeon, U.S. Arm... More
Blasting crew boring into vein with horizontal drill for dynamiting. M...
Picryl description: Public domain image of a coal mine, mining, free to use, no copyright restrictions.
Miners pushing an "empty" (sides of tunnel show depth of coal vein), c...
Two miners pushing coal car. H92084 U.S. Copyright Office. No. 13220.
The (sometimes) rushing Crystal River, one of Colorado's noted trout s...
Title, date and keywords based on information provided by the photographer. Credit line: Gates Frontiers Fund Colorado Collection within the Carol M. Highsmith Archive, Library of Congress, Prints and Photograp... More
Cabinet members chat with Anthony Eden. Washington, D.C., Dec. 13. Ant...
A group of men in suits standing next to each other. Public domain portrait photograph, free to use, no copyright restrictions image - Picryl description
Kern County, California. Tungsten Chief Mine. Starting to mine a new v...
Public domain photograph of rural landscape, California, no copyright restrictions image - Picryl description
![[How we get gold in California: "Fremont Mill and vein, Mariposa", "Ground sluicing, at Gold Hill", "winnowing gold, near Chinese camp," and "ocean beach mining, at gold bluff]](https://cache.getarchive.net/Prod/thumb/cdn4/L3Bob3RvLzE4NjAvMDEvMDEvaG93LXdlLWdldC1nb2xkLWluLWNhbGlmb3JuaWEtZnJlbW9udC1taWxsLWFuZC12ZWluLW1hcmlwb3NhLWdyb3VuZC1zbHVpY2luZy02NDAuanBn/40/32/webp "[How we get gold in California: \"Fremont Mill and vein, Mariposa\", \"Ground sluicing, at Gold Hill\", \"winnowing gold, near Chinese camp,\" and \"ocean beach mining, at gold bluff]")
[How we get gold in California: "Fremont Mill and vein, Mariposa", "Gr...
Wood engraving from Harper's Monthly, Volume 20, 1860. This record contains unverified, old data from caption card.