184 University Geological Survey of Kansas. 
YIddIA 
31uQ 
OTTER OT rag tt CMM mt Be CRAY E 
ne YIM LEY ihe a dbl “A : 
y A a) 
% B Zz ZB 
1ONZ ROUGH? A.B? 
EO GY, GC Yoni tt A; ys 
Fig, 9. Mine near Galena, showing method of running drifts at different levels; also showing 
method of continuing mining around a cave-in by skirting drifts. 
