. Appendix to the Journals of the Senate and Assembly of the ... session of the Legislature of the State of California. DIVISION. 177 averaged $. a ton, and in December, 1873, $ a ton, averagingfor 14 months, $ a ton, recovered. Total figures of the mines production are not available but it isbelieved that $12,000,000 to $13,000,000 is a fair estimate, judgingfrom known output for scvcM-al yeai-s wlicre exact figures are at hand. In 1917. a well-financed coniiiany bought the property and unwateredit. The shaft was found in bad .shape on account of having been sunkin the slate and
. Appendix to the Journals of the Senate and Assembly of the ... session of the Legislature of the State of California. DIVISION. 177 averaged $. a ton, and in December, 1873, $ a ton, averagingfor 14 months, $ a ton, recovered. Total figures of the mines production are not available but it isbelieved that $12,000,000 to $13,000,000 is a fair estimate, judgingfrom known output for scvcM-al yeai-s wlicre exact figures are at hand. In 1917. a well-financed coniiiany bought the property and unwateredit. The shaft was found in bad .shape on account of having been sunkin the slate and about $200,000 was expended for equipment, pumpingand shaft repairs, the last two items alone amounting to $117, .shaft was deepened to 3500 feet and levels were run north an(lsouth on the main vein fissure at 1700, 2125, 2950 and 3500 feet. The main vein was found to have had a slate footwall with heavygouge and greenstone (altered andesite) hanging wall in those work-ings that had furnished ore. The andesite extends for 800 feet on thestrike, and the ore was sto])ed for 450 to 500 feet on the .strike and. GUI lOuicka Minu, a noted early-day producer, with a yield probably in excess of $12,000,000. evidently cut out, both on dip and strike, with the thinning out ofthe andesite, about the 1700-ft. level. The shaft and most of the otherworkings beween 1700 and 8500 feet in depth were in Mariposa slate,which is soft and swelling ground. The andesite lens thinned out tosuch an extent that it was no longer a factor in controlling Assuring,and the vein for the most part was a mass of barren or in the slate between these levels. Wide veins of low-gradefjuartz were coming in at the south faces of the 2950-ft. and The former level was run to the Central Eureka end-line. Anumber of were run without striking ore, although many thinkthat the possibilities in this exploration of the walls of the main veinhad been far from exhausted Avl
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Keywords: ., bookcentury1800, bookdecade1850, bookidappendixtojo, bookyear1853
