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Apr 1954 - A development heading being drilled off with a Holman SL-200 air-leg mounted machine
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Apr 1954 - A development heading being drilled off with a Holman SL-200 air-leg mounted machine
(from Mine & Quarry Engineering [April, 1954])
Image Reference: L-00742-03-0065-F08
Please note: We only have a low resolution copy of this image which is suitable only for display on this web page.
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