THE MINING AND QUARRY INDUSTRY I906 3I 



deterred iron manufacturers from attempting to utilize the ore in 

 blast furnaces. It is the purpose of the present company to carry 

 out a thorough investigation with a view to finding a commercial 

 outlet for the ore. Considerable quantities of. the ore have been 

 mined and shipped for experiment to furnaces and to the magnetite 

 concentrators at Mineville. 



The Cheever mine near Port Henry, Essex co., is to be reopened. 

 The mine which has been closed down for about 15 years has been 

 equipped with pumps for unwatering the underground workings. 

 It is planned to erect a concentrator during the present season. 



The Benson mines in St Lawrence county have been taken over 

 by new parties who will begin mining operations during the current 

 year. It is intended at the start to use the old mill, after the neces- 

 sary improvements have been made, but a new one will be erected 

 if warranted by the developments. 



The Hammondville district in Essex county has been under ex- 

 ploration by the Oliver Iron Alining Co. A magnetic survey was 

 carried out, and the ground further tested by the diamond drill. The 

 results have shown the existence of ore bodies hitherto unworked, 

 but the reserves thus far found have not been sufficient to warrant 

 a renewal of mining operations. 



Notes on recent mining developments 

 Mineville. The production from this district was curtailed to 

 some extent by a temporary suspension of operations on the part 

 of the Port Henry Iron Ore Co. A slide of rock and earth last 

 spring partly filled the large open pit in mine "21 " and prevented 

 access underground through the inclined shaft at the bottom. The 

 shaft was retimbered and restored, but no ore was taken out for 

 several months. Work in the pit has been discontinued. The com- 

 pany has started a new shaft in order to forestah any further trouble 

 from similar sources. It is located 500 feet south of the present 

 one and east of the Bonanza shaft of Witherbee, Sherman & Co. 

 which is on the same ore body. 



Mining was continued by Witherbee, Sherman & Co. in the five 

 shafts worked during the preceding year, 'comprising the Joker and 

 Bonanza on the Old Bed, A and B shafts on the Harmony ore body 

 and Cook shaft. The two mills for treating the ore have likewise 

 been in commission. Exploration work has been prosecuted by the 

 company with little interruption, and the available ore supplies are 

 well ahead of the production. The results obtained by diamond 



