42 NEW YORK STATE MUSEUM 



The Barton Hill mines have furnished a large output of concen- 

 trating ore, running from 30 to 35 per cent iron. The output is 

 treated in a separate mill which was placed in operation in the fall 

 of 1912. The mill concentrates are of Bessemer grade, carrying 

 about .025 phosphorus with 65 per cent iron. About 1000 tons 

 crude ore are handled each day in this mill alone which is the latest 

 of the Mineville concentrating plants and which marks an advance 

 in arrangement and equipment over its prototypes. A full descrip- 

 tion of the mill has been given by J. S. Pellett in the Engineering 

 and Mining Journal. 1 



Lake Sanford. A furnace test of the titaniferous magnetites 

 which occur in this part of Essex county is planned for the current 

 season by the Maclntyre Iron Co. The ore for the test will be 

 shipped to the Cedar Point furnace at Port Henry. The trial will 

 be made with regular working charges and continued sufficiently 

 long to demonstrate the behavior of the material under conditions of 

 commercial practice. A small mill has been erected at the mines and 

 about 15,000 tons of ore were taken out last year for treatment. 

 The main difficulty that has confronted the owners in their exper- 

 imental work is the remote situation of the property which neces- 

 sitates a long and expensive haulage of all materials to or from the 

 nearest railroad point. 



Lyon Mountain. It is probable that the output of the mines at 

 Lyon Mountain will soon be considerably enlarged. The Chateau- 

 gay Ore & Iron Co. has decided upon undertaking certain improve- 

 ments which will lead to the introduction of a new system of under- 

 ground work and provide an increased hoisting capacity. The 

 principal feature of the new plans is an inclined shaft which it is 

 intended will serve as the main opening for future mining and de- 

 velopment and will take the place of the several inclines in use 

 heretofore. The new shaft will be concrete lined and have four 

 compartments, of which three will be for hoisting and one for an 

 air and manway. It will be put down in the footwall 20 feet or 

 more below the vein. From the shaft, access to the ore will be had 

 through cross-cuts and levels established at every 300 feet. In- 

 stead of the room and pillar system now used, a method of shrink- 

 age stopping will be employed. The ore will be loaded by gravity 

 into mine cars and electrically hauled to the shaft bins. Reaching 

 the surface in skips, the ore will be first crushed down to 1.5 inches 

 at the shaft by passing through crushers and rolls and then taken 



March 14, 1914. 



