Show california IN 1919 the statistical division of the state mining bureau under the direction of fletcher FI hamilton amilton state mineralogist estimates the mineral production of california for the year 1919 just closed at a total value of approximately this is a conservative serva tive figure and includes all products metallic and nonmetallic non metallic being in advance of the actual figures which will be available later after the complete returns are received from the various producers this is a decrease of approximately compared with the 1918 total and is due to the marked drop in prices and the cessation in demand of the so called war minerals petroleum and gold individually increases were made by petroleum and gold the former while in creasing but slightly in total number ot of 4 barrels showed an increase of iholts about 6 in value vahie gold anc increased re aad approximately in value indicating that this form mining of in california his t awa ady t beginning to readjust itself however er this recovery from the downward trend af odthe ne t P preceding three years and particularly from the abnormal drop in the 1918 output is the result of improved grades of ore in ili some of the larger lode lade mines rather than from aln 1 reopening of gold properties n ril decreases recorded notable decreases in value are shown by copper approximately P potash tungsten ab 1 quicksilver and by lead manganese and zinc dropping from the record figures attained in the period 1916 1918 the product production ibn of bof po ash and of tungsten became practically nil in 1919 shipments of manganese maga nese ores amounted to only about 50 per cent of 1918 output the date of publication of the final and complete report on the mineral production for the year is dependent upon the prompt ness of the replies from the operators the law requires that reports must be made to the state mining bureau the details of the individual returns being held confidential quantities and values the estimated quantities and values for 1919 are tabulated as follows gold oz silver tons tungsten concentrates lb ib copper lb ib lead ib zinc flasks flacks quicksilver oz platinum bbl abbl petroleum 1500 tons tons manganese tons magnesi tew M cu ft natu natural ral gas brick cee ce cement e nt buil building dirig stone crushed rock etc miscellaneous industrial minerals salines including borax potash salt soda total |