. Appendix to the Journals of the Senate and Assembly of the ... session of the Legislature of the State of California. ur of about one-half mile from Watsons. The magnesite is being mined at the lower deposit, where a quarry face has beenopened up. In the calcining plant, a rotary kiln, oil-fired, is in operation, with capacityof 30 tons per 24 hours. A second kiln is stated to be enroute for installation. Thecrude mineral is crushed to pass a 2-inch ring before charging to the kiln ; and thecalcined material is pulverized after cooling in steel bins. Power is obtained by an oil-burning steam
. Appendix to the Journals of the Senate and Assembly of the ... session of the Legislature of the State of California. ur of about one-half mile from Watsons. The magnesite is being mined at the lower deposit, where a quarry face has beenopened up. In the calcining plant, a rotary kiln, oil-fired, is in operation, with capacityof 30 tons per 24 hours. A second kiln is stated to be enroute for installation. Thecrude mineral is crushed to pass a 2-inch ring before charging to the kiln ; and thecalcined material is pulverized after cooling in steel bins. Power is obtained by an oil-burning steam plant. The kiln consumes % bbl. of oil per ton of calcined magnesiaobtained, wliich is reduced to B/r (Oo. The fuiisliod product is packed in paper-lined duck bags for Pacific Coast consumption, and in 4 00-pound paper-lined barrelsfor the eastern market. Shipments are now being made to New York via the PanamaCanal, an ocean rate of $ per ton from tidewater. San Francisco, to New Yorkhaving been secured. Seventy men are at work. —W. W. B., July. 1915. SONOMA COUNTY. 329 «nw or xiiE SONOMA MAGXESITECOMPAIVY. 23—27278 330 MINES AND MINERAL RESOURCES. up over the hill, but apparently does not cross the creek to the general trend of the veins is about N. 25° W., and the dip north-east. There are a few hundred tons of broken magnesite on thedumps of these tunnels and as float below. Besides the usual charac-teristics, specimens were found exhibiting parallel shrinkage cracks(see photo No. 179). Almost no drifting has been done so far, so thatthe continuity or the extent of these veins underground is as yet un-certain.
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Keywords: ., bookauthorcaliforn, bookcentury1800, bookdecade1850, bookyear1853
