140 



THE PROSPECTOR'S HANDBOOK. 



8 feet ; the adits are generally 7 or 6 feet in height, and 1 

 or 6 feet in width. 



FIG. 69. LODE WORKED BY VERTICAL SHAFT. 



1, Lode. 2, Shaft, 15 -120 fathoms crosscuts. 3, Productive strata. 4, Unpro- 

 ductive strata. 5, Adit level. 6, Dressing sheds. 



N.B. The ore is more difficult to raise up a slanting 

 shaft than a perpendicular one. 



