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Nov 1956 - A Muir-Hill 4½ cu. yd. hydraulic dumper discharging its load at the grizzley over the hopper
Nov 1956 - A Muir-Hill 4½ cu. yd. hydraulic dumper discharging its load at the grizzley over the hopper ["The Sandwith Anhydrite Mine"] (from Mine & Quarry Engineering [November, 1956]) Image Reference: L-00787-04-0065-F10 |
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