Excerpt from California Mineral Production for 1928

It is the endeavor Of the staff Of the State Division of Mines (formerly State Mining Bureau), in these annual reports of the mineral industries Of California, to so compile the statistics of production that they will be of actual use to producers and to those interested in the utilization Of the mineral products Of our state, while at the same time keeping the individual 's data confidential. In addition to the mere figures Of output, we have included descriptions of the uses and characteristics Of many Of the materials, as well as a brief mention Of their occurrences.

The compilation Of accurate and dependable figures is an extremely difficult undertaking, and the State Mineralogist takes the Opportunity of here expressing his appreciation Of the cooperation of the producers in making this work possible. A fuller appreciation Of the value of early responses to the requests sent out in January will result in earlier completion Of the manuscript. Statistics lose much of their value if their publication is unnecessarily delayed.

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