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Infusorial earth and tripoli 29
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abrasive materials acid alumina amount amphibole amphibole asbestos analyses anthophyllite artificial asbestos Asbestos Company average price barite barytes buhrstones Canadian carbonate carborundum cent chemical chrome chromic oxide chromite chromium chrysotile chrysotile asbestos chrysotile variety color compared considerable containing corundum County Creek crude barytes crushed steel cryolite crystalline crystals decrease deposits developed dunite emery exported feet feldspar fiber fluorspar following table furnace garnet Geol given gneiss graphite grindstones grit heat imported inches included increase infusorial earth iron JOSEPH HYDE PRATT Kentucky lepidolite limestone lithium localities magma magnesia manufacture mass miles mined MINERAL RESOURCES nearly nickel North Carolina obtained occurs oilstones outcrop percentage peridotite peridotite rocks platinum pounds production of fluorspar pulpstones pumice quarries quartz railroad reported salts sandstone schists scythestones seams serpentine short tons silica sodium specimens spinel spodumene stone strontium thickness tion tons in quantity United varying veins wurde