44 GEOLOGY AND MINING INDUSTRY OF LEADVILLE. 



material remaining being 250 feet or more thick in the Rothschild and Den- 

 ver City shafts. The steep north face of Breece Hill below the present 

 grade formed its southern wall, and below this it probably covered more or 

 less completely all the region north of Stray Horse gulch, so that to its 

 action is probably due the exposure of the valuable ore deposits of Fryer 

 Hill, and also the removal of a great portion of them. 



