58 



GEOLOGICAL SURVEY OF ALABAMA 



the bottom of which shaft a slope was driven, following 

 and lying in the pegmatite, which proving to be continu- 

 ously micaized and extensive, justified the subsequent and 

 proper method of entry by the present tunnel, run in 

 from the base of the hill. An open entry cut 80 feet 

 in length reaches the portal of the tunnel, which in a 

 further length of 80 feet intersects the pegmatite body at 

 the foot of the slope, affording proper ventilation and 

 facilities for economic mica recovery. 



Right and left entries from the slope have been driven 

 on three levels, connected at intervals by stopes, leaving 

 proper intermediate roof support, and effectively block- 

 ing out the ore as is shown in Figure 3, a plan of the 

 mine workings. 



J l:C:V.-ll l 



50 



^oo Feet 



LtGEHD 



F/GUKE 3. ~P/anof#re mme wrk'itigs 



. 

 ctetcrtttd in text 



T>83 R./OE1. 



