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dc.contributor.authorStott, Roy G.
dc.date1947-07-29
dc.date.accessioned2007-01-03T06:01:34Z
dc.date.accessioned2022-02-03T09:21:32Z
dc.date.available2007-01-03T06:01:34Z
dc.date.available2022-02-03T09:21:32Z
dc.identifierlibimagesU743a
dc.identifier.urihttp://hdl.handle.net/11124/7402
dc.descriptionDate scanned: 2002-6-20.
dc.descriptionI. S.-1; Charge of nitramon explosive in dog drift for coyote hole blast, showing primacord connections from similar charge in stub drift off the left. Hill-Annex Mine, Inter-State Iron Company, Calumet, Minnesota. - R. G. Stott - July 29, 1947.
dc.descriptionHeld in the Russell L. and Lyn Wood Mining History Archive, Arthur Lakes Library, Colorado School of Mines.
dc.descriptionDonor: United States Bureau of Mines.
dc.description.abstractA dog drift in a coyote hole is shown packed with explosive charges at the Hill-Annex Mine. A coyote hole is a small tunnel driven into the rock at right angles to the pit wall, with crosscuts from it parallel to the face. Explosive charges are placed in the crosscuts and the hole filled with debris or concrete to tamp it for the blast. The Hill-Annex Mine was an open pit iron mine in the Mesabi Range, Minnesota. The Mine started shipping ore in 1914 under Inter-State Iron Company and operated until 1978, producing some 63 million tons of ore. After the Hill-Annex was closed the pit flooded, and the site became a state park in 1988.
dc.publisherColorado School of Mines. Arthur Lakes Library
dc.rightsRights management statement available at: http://library.mines.edu/digital/rights.html
dc.subjectInter_State Iron Company
dc.subjectExplosives
dc.subjectIron mines and mining
dc.subjectOpen pit mining
dc.subjectScenes, underground
dc.titleHill-Annex Mine, explosive charge in coyote hole
dc.typeStillImage
dc.contributor.institutionArthur Lakes Library
dc.contributor.institutionRussell L. and Lyn Wood Mining History Archive
dc.contributor.institutionUnited States. Bureau of Mines


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