Show METAL production OF I 1 IDAHO dach 0 the value of the mine output of precious and semiprecious metals in idaho in 1912 according to C N gerry of the united states geological survey was against in 1911 the production of gold was valued at only slightly more than in 1911 the yield from deep mines was about less in 1912 than 1911 but the yield recovered by dredging and other placer mining Imet methods holls was larger the silver output was ounces an increase of less than one per cent about 84 iter er cent of the silver yield was derived from lead ores and six per cent from lead zinc ores the production of copper increased from pounds valued at in 1911 to pounds valued at in 1912 although the lost packer was not operated the laid production in 1912 was pounds valued at an increase of pounds record shipments of zinc ore and concentrates cen were made in 1912 when the production of zinc was pounds valued at the increase of pounds was due mainly to larger shipments of concentrates from the success and morning mines of the producing mines in idaho were deep mines which shipped or treated tons of ore an increase of tons compared colm pared with 1911 of this ore tonnage sold or treated tons were concentrated tons were shipper crude to smelters shelters sm elters and tons were treated at gold and silver mills shoshone county or the coeur dalene region produced metals valued at this important region produced six per cent or of the gold 90 per cent of the silver 59 per cent of the copper 93 per cent of the lead and nearly all of the zinc reported by idaho mines in 1912 0 |