File:Longwall history fig 5.jpg
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| Mine Index(s): | 999-9999 |
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| File Type: | Illustration |
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| Caption | Figure 5. One example of a type of advancing longwall panel from LaSalle County. |
| Publication | Bauer, Robert A., 2015 (version), History of Longwall Coal Mining in Illinois, Illinois State Geological Survey, Unpublished Manuscript Files, pp. 15. |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 15:17, January 25, 2021 | | 1,565 × 2,000 (1.12 MB) | Alan.Myers (talk | contribs) |
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