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Updated: May 3, 2025
Hour after hour the clanging of steel against steel sounded in the big underground room, as the drills bit deeper and deeper into the hard formation of the foot wall, driving steadily forward until their contact should have a different sound, and the muggy scrapings bear a darker hue than that of mere wall-rock.
Some quartz on exposure to the air crumbles into sand, though hard when first taken from the vein. In narrow lodes, some of the wall-rock must be cut away to get room for the workmen. In wide lodes, that part of the vein-stone which does not pay is left. Sometimes the gold from the lode penetrates a little way into the foot-wall, and in that case the quarrying must extend beyond the vein stone.
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