Roof and Rib Control
14:42
Added: 3 years ago
From: PublicResourceOrg
Views: 6,293
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  • Great explanation and footage for those new to the coal industry. Would also like to see more.

    marykat3095 3 years ago

  • Good Footage & Tips...Would like to see more.

    KeithSDMF 3 years ago

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