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Square set timbering, underground at Golden Horse Mine, miners at work.
Underground, miners and equipment at Oroya drilling.
Hainault Mine No. 1 Level North underground with Miners erecting Timber frames.
Kalgurli drive underground with miners holding candle spiders. Drill and parts visible.
Croesus G.M. Miners underground.
Mine. Underground, 3 miners, 1 with pipe. Large bucket on pulley, bin on wheels, miners light hanging from beam, solid timber supports.