A mile underground at the Homestake mine two men are at work, dim silhouettes beneath bright balloons of light cast by their head lamps. They are standing in a low, dark cavern, about 200 ft. long and 50 ft. wide, which is just now acquiring a festive look. Long blue and yellow streamers trail down out of the darkness from the jagged rocks overhead. Richard Aberle is patiently connecting up the streamers to make an electric circuit: yellow to yellow, blue to blue. They lead to detonator caps and charges buried deep...
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