U. S. GEOLOGICAL SURVEY 



MONOGRAPH XIX PLATE XXX 



NO 5 



No 9 No7 



No 6 



No S 



iiL* Jill.''- OloNo,4 





No3 



Surface motehiai removed 



Open pit 



No2 NO 1 



No 8 



No.7 



3 





Xjonyitijjb/uil Section^ 



rATHERHFNNCPIN 



^ Shaft 



IJ? 



No2n Shaft 



N— ^'' '.-flfi'I 



m 



Shaft 



ORE DEPOSITS. 



Fig. 1. — Longitudinal section of south deposit Montreal mine. 

 Fig. 2. —Longitudinal section of north deposit. Montreal mine. 

 Fig 3. Cross section of south deposit. Montreal mine. 



Fig. 4 ^Cross section of south and north deposits, Montreal mine. 

 Fig. 5— Longitudinal section of Pence mine. 

 Figs 6, 7, 8.— Cross sections of Pence mine. 



