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Underground mining (hard rock) - Wikipedia

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The Story of the Pine Creek Tungsten Mine - Rock …

2013-10-1 · Pine Creek Tungsten Mine Prospectors located mining claims along Pine Creek high up in the rugged Sierra Nevada west of Bishop in 1895, but the gold and …

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Michigan-Copper-Mines - Mining Artifacts

Although the copper-mining region stretched about 100 miles from northeast to southwest, the most productive early mines, working fissure veins, were those at the ...

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Have you ever wished you can go back in time? Here is the opportunity to do just that. Take your headlamp, camera, some water and put on your boots and get ready to ...

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The worlds deepest, biggest and deadliest open …

In this article we will take you to some gigantic man-made holes: open pit mines. We’ll show you the biggest, deepest and deadliest mines in the world.

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An Overview of the 2014 GIA Brazil Expedition | …

Join GIA’s field gemologists as they venture into some of Brazil’s most important and productive emerald and tourmaline mines.

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Some of the Old Sabie Mines | Sabie, …

When Capt. J.C. Heyneke first arrived in Sabie IN 1930, there were something like 15 different mines operating. Glynn’s Lydenburg Mine Ltd. was the biggest gold ...

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