File:Canadian drilling outfit for drilling with wooden poles scheme.svg

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Description
Română: Schema unui sistem canadian de foraj cu prăjini de lemn.
Date
Source
  • "Illustrated Catalogue of the Oil Well Supply Co.", Pittsburgh, Pa.; Bradford, Oil City, Pa.; New York City, U. S. A., 1892, pp. 28–29
  • United States Department of the Interior, Geological Survey, Water-Supply Paper 257, "Well-Drilling Methods" by Isaiah Bowman, United States, Government Printing Office, Washington, 1911, 1935, p. 62
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  • Unknown authorUnknown author (of the original drawing)
  • Kun Kipcsak (of the vectorial version)
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Date/TimeThumbnailDimensionsUserComment
current16:25, 8 April 2024Thumbnail for version as of 16:25, 8 April 20241,000 × 1,375 (317 KB)Kun Kipcsak (talk | contribs)+ corr.
06:36, 25 January 2024Thumbnail for version as of 06:36, 25 January 20241,000 × 1,375 (317 KB)Kun Kipcsak (talk | contribs)+ corr
21:33, 24 January 2024Thumbnail for version as of 21:33, 24 January 20241,000 × 1,375 (279 KB)Kun Kipcsak (talk | contribs)Uploaded own work with UploadWizard

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