Show w je SORTED AND SAMPLED g vf in commerce the term aps hattum is generally used to indicate any or all of the varieties of hydro hydrocarbons carbons which are included under the mineralogical names of asphaltum ph altum as gralia mite gilsonite and some other well known compounds which exist in nature in all conditions from the viscid to the solid generally in the form of brick is now universally recognized as the best material for lining basic open hearth furnaces cement kilns kalns etc the distinctive characteristics of a lining are durability freedom from moisture and acid and resistance to corrosion when exposed to the action of basic flags and metallic oxides these qualities make the lining cheaper than most others in the long run the total value of all of the petroleum marketed in the united states during 1904 was a gain of over 1903 and the largest value hitherto recorded the average price received was cents per barrel compared with cents for 1903 there being a decline of cents per barrel which was more than offset by the increase in quantity there was a gain of 1407 cents per barrel in value in 1903 over 1902 in dry climates and especially in the western states assayers experience some difficulty in the handling of their delicate button balances sometimes I 1 in merely dusting in touching the glass accidentally the instrument becomes charged with static electricity so that accurate weighing is nearly impossible sometimes a windstorm or air friction on the case will cause the rider to become unmanageable the trouble may be overcome by wiping the case with a moist cloth when ore is crushed the ore proper is usually pulverized first as it is more brittle than the matrix or gangue of rock which accompanies the mineral this fine ore tends to pass the ordinary screens but there is a point which seems in the case of many ores to limit the readiness of pulverization this limit appears in many tables of screening tests to be reached at about to mesh in other cases the finest slime will carry the richest value the conditions and qualities governing the pulverization limit of ore have not yet been worked out california is the only state in the union that produces which is a native magnesium carbonate composed of per cent magnesia and per cent carbon dioxide during 1904 the quantity of crude produced was 2850 tons valued at with the exception of 51 tons mined in fresno and napa counties this was all derived from the deposits at por ville tulare county for 1903 the quantity reported was 3 short tons crude valued at equivalent to 1361 tons worth the demand for both crude and on the pacific coast is limited and prohibitive freight rates has thus far prevented shipments to the east oregon and california consume the entire native production the mineral is a native carbonate of magnesia composed of magnesia per cent and carbon dioxide per cent there is often combined with it a small quantity of magnesium silicate and iron carbonate the production of this mineral in the united states continues to be entirely from california and during 1904 the quantity of output was 2850 tons crude valued at with the exception of 51 tons from fresno and napa counties this was all derived from the deposits at portersville Porters ville vilIe tulare county in the crude state sta te is used for the manufacture of carbon dioxide gas it is used in the manufacture of paper from wood pulp and as a refractory material in brick or concrete form for lining furnaces covering steam pipes pipe s as artificial lumber as composite stone for lithographing litho graphing etc the magnesia chloride is an excellent bleaching agent the first borax produced in i n the united states was in 1864 at borax lake on the margin of clear lake lake county cal where 12 short tons were manufactured by the evaporation of the waters of the lake the price obtained at that time was 39 cents per pound or per ton before this production however dr john A veatch had discovered borax in 1856 at the tuscan springs in tehama county and also at the mouth of pitt river shasta county california in that same year he discovered the existence of borax lake where the first production was subsequently made in 1860 the same gentleman found traces of borax at mono lake mono county in 1863 mr J W searles discovered borax in searles lake in san bernardino county near the inyo county line from 1864 to 1868 the entire product of the united states came from the waters of borax lake lake county |