File:Long-wall mining.png

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Summary

Description
English: Long-wall mining
Date 7 July 2020(2020-07-07)
File source https://www.britannica.com/technology/coal-mining#ref623752
Author Consol Coal group

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current08:33, 25 June 2022Thumbnail for version as of 08:33, 25 June 20221,094 × 736 (1.1 MB)JackyYuChiehChang (talk | contribs)Uploaded a work by Consol Coal group from https://www.britannica.com/technology/coal-mining#ref623752 with UploadWizard

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