Mining 101 on the UC Berkeley campus a hundred years ago: the basics of dynamite, shoring a mine shaft, mine surveying and mine rescue. And it wasn't just mining theory. The students, 18, 19 and 20 ...
The some 3,000 mines in San Bernardino County attract adventurers. YouTube videos and Facebook pages are devoted to rappelling in and exploring their shafts. Website authors wax nostalgic about the ...
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