THE MINING AND QUARRY INDUSTRY I915 37 



Fort Montgomery, and Sterling Iron and Railway Co., Lakeville. 

 The hematite mines were operated by C. H. Borst, Clinton ; Furnace- 

 ville Iron Co., Ontario Center, and Ontario Iron Co., Ontario 

 Center. The single limonite mine was worked by Barnum, Richard- 

 son & Co., who shipped the output to their furnaces at Salisbury, 

 Conn. 



Mineville. A revival of activity was reported by the two com- 

 panies who are engaged in mining at this place. Witherbee, 

 Sherman & Co. continued work in the Old Bed group, where the 

 main operations in the past have been centered and also operated 

 the Harmony and Barton Hill mines. The Barton Hill property, 

 which was recently reopened, has become one of the principal 

 sources of ore supply, the new development uncovering some 

 extensive deposits of milling ore of desirable quality. This ore is 

 the lowest in phosphorus of the Mineville magnetites and has been 

 much in demand during the past year. 



The concentrates are used in part in the Port Henry furnace 

 which has been running of late on low phosphorus pig. Besides 

 the properties in Mineville, the company owns a scries of deposits 

 which extend for some distance north of these and which include 

 the Smith and the Sherman mines, both equipped for production. 



Lyon Mountain. Important improvements have been made in 

 the mining installation of the Chateaugay Ore & Iron Co., which 

 works the magnetite deposits at this place. The principal feature 

 of the improvements is the construction of a new shaft which is 

 designed to provide a hoisting capacity of 3000 tons a day and 

 will take the place of the several small shafts at irregular intervals 

 along the outcrop which hitherto have been in use. The shaft 

 has been extended to about 900 feet depth and levels are now 

 being opened from it; during the past year it has provided some 

 ore for milling, but only such as was taken out in the course of 

 development. With the completion of this important work, the 

 methods of underground mining will be changed so as to effect 

 important economies as well as to increase the production. The 

 next step to be undertaken is the construction of a new mill which 

 is required if the milling capacity is adjusted to the mine output. 

 The company has plans for such a mill under consideration. All 

 the ore is crushed and concentrated before shipment. The con- 

 centrates, which carry above 60 per cent of iron, are very low in 

 phosphorus; consequently they are in great dem.and. They are 

 smelted in the furnaces at Standish and Port Henry. 



