![File:Early rotary drill bits.jpg](http://upload.wikimedia.org/wikipedia/commons/thumb/b/b8/Early_rotary_drill_bits.jpg/350px-Early_rotary_drill_bits.jpg)
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 15:22, 12 August 2020 | ![]() | 516 × 884 (116 KB) | Pi3.124 | Uploaded a work by N.M. Fenneman from OIL FIELDS OF THE TEXAS-LOUISIANA GULF COASTAL PLAIN, USGS Bulletin 282, https://pubs.usgs.gov/bul/0282/report.pdf with UploadWizard |
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