California State Mining Bureau · Sacramento : California State Mining Bureau · leaf 396
o compartment shaft sunk to a depth of1000 feet on the vein (incline on 69° to 450 feet, then flattens to 39degrees to the 1000 foot level). At 950 feet the shaft goes into thefootwall, and a short crosscut to cut the vein. Mine practically stopedout above the 800 level. Between 900 and 1000 levels… … I § % 1 Ink ! 5 k cukkj V 1 OJk s3 3 I N J PI**> 1 5Qj 1 1 1 C.55 1 I 1 -SI -0 4 1 1 V <utsoj-< i.; s 5 s 1 v1 01 N * £ V § ^ CI ^k^ ^ •v % ^ ^« ^ fcj > ^ Gi ^» >. Cr- +> -0 N Oo O $ $ in -9 S S (JO 1*: 0 Sk* 372 MINES AND MINERAL RESOURCES. solution of H2 S04 and H. CI. Steam heated to 97° C.…
Mines and mineral resources · Gold mines and mining · Mineralogy
Internet Archive Book Images · University of California, Davis Libraries · No known copyright restrictions (public domain). Free to use for anything.
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer04inte-301-131.webp)
