MINERAL RESOURCES OF THE- STATE OF NEW YORK 297. 



deposit was mined clean, at least to the depth attained in the recent 

 unwatering, and it would appear that the only chance for reviving 

 production lies in the possibility of ore at the bottom, below 360 feet 

 depth. It is of course doubtful if the supply encountered at the 

 bottom would warrant the heavy expense of unwatering and 

 reequipping the property with permanent mine and milling machinery. 

 A brief resume of the features relating to the distribution of zinc 

 ores in the State are given herewith. In connection with the 

 Edwards district attention may be called to the recent reports on 

 the geology and economic conditions of the ore occurrence, listed 

 at the end of the chapter; the notes that follow refer more particu- 

 larly to the later progress of mining developments in the district. 



THE EDWARDS DISTRICT 



The Northern Ore Co., after 3 years of continuous exploitation 

 of the deposits near Edwards, is increasing its mine and mill equip- 

 ment. To facilitate the deep development of the ore zone, a vertical 

 shaft has been put down on the hanging side, to the west of the 

 outcrop, which will be used in carrying on operations below the 

 500-foot level. It has already been carried to a depth of 900 feet, 

 and as soon as connections with the drifts are made will be employed 

 for hoisting. The Williams shaft on the north end has been extended 

 700 feet along the ore and will soon be in active use. It has been 

 equipped with a new surface plant. This shaft follows an inde- 

 pendent ore body, which like those opened to the south is in the 

 nature of a lens or shoot whose longer axis is along the dip. The 

 mill produces both blende and pyrite concentrates, the latter being 

 shipped to acid burners. 



The exploration of the Rhodes or Adelbert Freeman farm near 

 Talcville by the Dominion Co. has revealed high-grade ore which 

 is sufficiently free from pyrite to permit its shipment in lump form. 

 The present development is on an isolated ridge which lies within 

 the limestone valley and which is made up of impure limestone, 

 carrying large amounts of serpentine and talc. The exploration 

 of the ore has been carried on mainly through an abandoned talc 

 shaft. From 4 to 6 feet of blende, assaying 42 to 52 per cent zinc, 

 was cut at 75 feet depth. At the surface the ore was about 4 feet 

 thick. Southwest of this locality, about 500 feet across the summit 

 of the hill, a second showing of ore has been uncovered at the surface, 

 but its relation to the first is not yet clear. If it should prove to 

 be a continuation of the same vein the deposit would have the 



