Category:Construction material (Logan Formation or Pottsville Formation)

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Media in category "Construction material (Logan Formation or Pottsville Formation)"

The following 2 files are in this category, out of 2 total.

Fired brick (Bowerston Shale Company, Hanover, Ohio, USA).jpg 3,647 × 1,826; 6.04 MB
Unfired brick (Bowerston Shale Company, Hanover, Ohio, USA).jpg 3,810 × 1,920; 4.83 MB

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