17
07
2008
The Front Line
Posted by: in Breaking News, tags: 2008-mediapack, contact-us, Copper, copyright, download-im-issues-now, featured-news, get-im-free, home, international, international-mining, Lead, News, offsets-demand, pay-on-line, Prices, rights-reserved-, search-im-articles, supply-tightness, technical-articles, why-advertise-with-imThese cracks in the ground, found anywhere else in the coalfield mountains, would be called mine breaks. Mine breaks occur usually right on top of a mountain. They are caused by either the collapsing ceiling in an abandoned mine or the …
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The Front Line
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