THE MINING AND QUARRY INDUSTRY I9I3 41 



The actual tonnage hoisted at the mines was considerably larger 

 than the quantity of furnace ore reported, since much of the 

 product from the Adirondack magnetite mines undergoes concen- 

 tration before shipment. A ton of concentrates which has an aver- 

 age tenor of 65 per cent iron represents from a little over one to 

 three tons of crude ore, according to the character of the deposit. 

 The reports for 191 3 show that the total quantity of magnetite 

 hoisted was 1,485,501 long tons, or 52 per cent more than the pro- 

 duction of furnace ore. The total tonnage of ore of all kinds 

 hoisted was 1,606,196, as compared with 1,430,998 in 191 2. 



The list of mining companies that were active during the year 

 included for the Adirondack region : Witherbee, Sherman & Co., 

 and Port Henry Iron Ore Co., Mineville ; Cheever Iron Ore Co., 

 Port Henry; Chateaugay Ore & Iron Co., Lyon Mountain; Benson 

 Mines Co., Benson Mines. In southeastern New York the pro- 

 ducers were Hudson Iron Co., Fort Montgomery, and the Sterling 

 Iron & Railway Co., Lakeville. The output of hematite was made 

 by C. H. Borst, Clinton; Furnaceville Iron Co., Ontario Center; 

 and Ontario Iron Co., Ontario Center. 



Mineville. The Mineville properties made a large output, al- 

 though operations were reduced for a time by labor troubles. The 

 quantity of ore raised by the two companies was 906,399 long tons, 

 nearly the maximum record, but the average grade was somewhat 

 lower than in earlier years, as an increased proportion came from 

 the deposits of concentrating ore. The active mines included the 

 Joker-Bonanza, Harmony, Barton Hill and Smith groups of Wither- 

 bee, Sherman & Co., and 21, Clonan and Welch shafts of the Port 

 Henry Tron Ore Co. 



The development of the Sherman mine, on the northern end of 

 the ore zone as at present defined, was started by Witherbee, Sher- 

 man & Co., during the year. This mine and the Hall mine nearby 

 were discovered many years ago, but have not been actively worked, 

 as they are somewhat remote from the main group. The ore occur- 

 rence, however, is very similar to that of the more southerly de- 

 posits. 



Work in the Joker-Bonanza property has been centered mainly 

 upon the sheetlike deposit underlying the Old Bed proper. The 

 two shafts have been carried down to the lower zone, but the out- 

 put is mainly hoisted through the Joker. Exploration with the 

 diamond drill has disclosed the existence of magnetite in undevel- 

 oped ground on the borders of the main bodies, but its relation to 

 the latter and economic importance are as yet undetermined. 



