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Archive for December 10th, 2016

Originally published in Coal Age, December 10, 1925

Mile-long drift under Cedar Mountain gives old Black Diamond operation an outlet only 17 miles from city for 2,000 ton output

Electric hauling motor at New Black Diamond Mine, ca. 1927

Electric hauling motor at New Black Diamond Mine, ca. 1927

The last piece of rock separating the ends of the Pacific Coast Coal Co.’s tunnel under Cedar Mountain was blasted through on Oct. 16, thus completing an underground passage over a mile in length through which coal from the New Black Diamond Mine will be delivered to the tipple on the Pacific Coast R.R.

Completion of this tunnel—the two ends met fairly—is an engineering feat of no mean importance.

One end of this passage was driven from daylight while the other started in the mine workings on the other side of the mountain. Junction of the two sections was effected almost exactly midway between their starting points. (more…)

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