110 NEW YORK STATE MUSEUM 



The Harmony deposit to the south and a little west of the Joker- 

 Bonanza has developed into a large producer. It consists of a sheet 

 of ore where first tapped by the shafts, having a rather flat dip to 

 the southwest, but as it is followed downward rapidly steepens and 

 is cut by small trap dikes along faults of slight displacement. It 

 lies considerably higher than the Old Bed and affords a different 

 quality of ore, lower in iron and phosphorus and having a quartz 

 gangue. 



The Barton hill mines are opened along an ore band that 

 shows swells and pinches but is practically continuous for 3500 

 feet, beginning one-half of a mile directly west of the 21 opening 

 and running a little east of north along the southern and eastern 

 slopes of the hill. After an interval of 2000 feet of un worked ground 

 ore again appears on Fisher hill and extends for another 2000 feet. 

 The Barton hill deposits were mined in the early days when a large 

 quantity of furnace ore was shipped from the higher grade portions 

 and are now being worked systematically with removal of all the 

 material that can be treated profitably in the mill. The concentrates 

 are below the Bessemer limit in phosphorus and highly desirable 

 for furnace use. 



The Smith mine owned by Witherbee, Sherman & Co. lies to the 

 east of Fisher hill; it has been worked at intervals, but not on a 

 large scale. The Sherman mine is one-half of a mile north of the 

 workings on Fisher hill and is the last of the Mineville group 

 encountered in that direction. It is one of the old mines but has 

 recently been reopened and put in regular operation. 



Three mills employing dry magnetic concentration are operated 

 on the Mineville ores, and in addition some of the output is shipped 

 crude. From the Old Bed ore, a valuable apatite product is secured, 

 serviceable for phosphate manufacture. The surface and under- 

 ground installations exemplify the highest development in the 

 technic of mining and milling and have been adopted as pattern 

 in many of the other magnetite districts of the east. 



Between Mineville and the lakeside north of Port Henry are the 

 Pilfershire and Lee mines, long since inoperative; while on the lake 

 2 miles north of Port Henry is the Cheever mine, the oldest in the 

 district on which work was restarted in 1908, after a long period 

 of idleness. This belongs to the Cheever Iron Ore Co. It is based 

 on a sheet, showing in ,some places two parallel layers, that extends 

 for nearly a mile on the outcrop, included in a grayish or greenish 

 quartz syenitic gneiss overlain by limestone and having gabbro on 

 the east side toward the lake. It yields an ore high in phosphorus 



