Anglo American (Anglo) acquired the Blue Spec mine in 1974 and defined an ore reserve from the 180m to 320m vertical level. Anglo sunk a new triple compartment shaft to the 180m level and developed decline access to the reserve. Anglo utilised mechanised cut and fill mining methods with average stope widths of approximately 2m. Stoping of the orebody to widths of less than 1.8m in the western extent of the Blue Spec orebody during the last three periods of production achieved lower dilution rates with production exceeding 36g/t gold and 3.5% antimony.
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