![Longwall mining / Underground mining / Navigation / Joy Mining Machinery / Global Positioning System / Event Viewer / Clock / Technology / Horology / Coal mining Longwall mining / Underground mining / Navigation / Joy Mining Machinery / Global Positioning System / Event Viewer / Clock / Technology / Horology / Coal mining](https://www.pdfsearch.io/img/0e0af9334b39afd3852e2eced5ae7fe7.jpg) Date: 2014-07-24 09:55:36Longwall mining Underground mining Navigation Joy Mining Machinery Global Positioning System Event Viewer Clock Technology Horology Coal mining | | MSHA - Performance Coal - Upper Big Branch Mine-South - Fatal Accident Report - Appendices
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