File:Figure 20..png
![File:Figure 20..png](/images/thumb/b/bd/Figure_20..png/743px-Figure_20..png?20240215132750)
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Part of Old Ben Mine No. 21 in Franklin County, showing channels, split coal, rolls, and related features.
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current | 08:27, February 15, 2024 | ![]() | 778 × 628 (234 KB) | Samantha.Hager (talk | contribs) |
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