Bulletin . 37. W. of Rocky Mts., 1875, p. 14. Don Juan and Don Miguel Mines (also known as San Benito, andCody). W. A. Breen, manager, Hernandez. This group in Sec. 36,T. 18 S., R. 11 E., and Sec. 31, T. 18 S., R. 12 E., M. D. M., on theSan Benito River southwest of Picacho Peak has been idle for manyyears. It is stated that a company has recently been formed, and 8men are now at work, reopening and retimbering the old tunnel. Itis proposed to build a small furnace the coming spring (1918). Bibl.: Cal. State Min. Bur., Report XV, p. 654; Chapter period, 1915-1916. p. 60; Bul
Bulletin . 37. W. of Rocky Mts., 1875, p. 14. Don Juan and Don Miguel Mines (also known as San Benito, andCody). W. A. Breen, manager, Hernandez. This group in Sec. 36,T. 18 S., R. 11 E., and Sec. 31, T. 18 S., R. 12 E., M. D. M., on theSan Benito River southwest of Picacho Peak has been idle for manyyears. It is stated that a company has recently been formed, and 8men are now at work, reopening and retimbering the old tunnel. Itis proposed to build a small furnace the coming spring (1918). Bibl.: Cal. State Min. Bur., Report XV, p. 654; Chapter period, 1915-1916. p. 60; Bull. 27, p. 137. Florence Mack Mine. C. P. Smith, owner. King City. In 1915-1916it was leased to G. W. Warner and S. M. Suffron, Paso Robles, but isat present idle. The holdings consist of 6 full claims, with a totallength of 6000 feet, in Sec. 32, T. 18 S., R. 12 E., M. D. M., on SawMill Creek. 7 miles from Hernandez and 30 miles from Coalinga, about Op. cit., pp. 134-137. 104 CALIFORNIA STATE MINING Photo No. 19. Old and new prospect tunnels, Florence Mack old (upper) tunnel was a few feet too high and failed to uncoverthe vein; the lower tunnel showed a fair prospect of by C. A. Logan. one mile from the main highway joining Hollister and the to Logan^: The development of the propi rt\- was done largely by a Mr. Courtney, of Hanford,who prospected it under bond in 1904 and the following years. The mineralized zonestrikes northwest and dips 40 to 45 SW. The timnels and crosscuts show astratum of black clay shale or mudrock about two feet wide, carrying cinnabarvalues near the footwall, which is a flne-gralned Indurated sandstone or shale. Thisbelt is cut by numerous pyrite stringers, carrying considerable cinnabar. There arethree tunnels on each side of the creek, but the work was done mostly on the left ornorthwest side. The lower and chief tunnel on this side enters the hill almost east and west. Nearthe portal the first crossc
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