File:Early coal mining 3.png

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Early self fueling coal mining

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	08:29, 16 August 2020		700 × 550 (1.02 MB)	Zippy (talk \| contribs)	1.0.0 updated.
	19:19, 31 August 2017		700 × 550 (741 KB)	Bilka (talk \| contribs)	Early self fueling coal mining

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