The Ketchikan miner., 1908-12-26
MINING ACTIVITY IN SOUTH
 EASTERN ALASKA.

MINING ACTIVITY IN SOUTH
 EASTERN ALASKA.
 Geologists of the United States Geo. logical Survey who have recently re- turned from Alaska report no great advance In the mining industry in the southeastern part of the Territory as compared with previous years all though at some of the mines in the Juneau distrct-the Treadwell group
 the Perseverance,, and the Eagle River ines-substantial progress was made and extensive mining and water power projects were undertaken,
 which promise well for considerable activity during 1909.
 At the Treadwel mine dev elop- ments have been pushed on the ], 4o0- foot level, which is to be used as a
 base for deeper explorations, and to this level the Seven Hundred Foot and Mexican mine shaft will be extended
 At the Ready Bullion mine epxlora- tions are being made on the l, 500-foot
 ievel. The stamp mills have been in continuous operation throughout the year, and the gold production will be about the same as that for 1907. The use of oil as a substitute for coal fol all purposes at these mines has re- duced the fuel expenses consider al ply, and additional water power has been provided by the building of dams on Ready Bullion and Fish creeks. Work on project to obtain power from Turner Lake, on the east side of Taku
 Inlet, IS miles from Treadwell is be- ing advanced. This project wlll nec- essitate the transmission of power across Tahu Inlet, a distance of 21a miles.
 At the Perseverar ce mine develop ments have been in progress through out the year, and the lode deposit is now opened at the tunnel level fol l 300 feet in length and 60 to 100 feet in width. The 100-stamp mill on the property was in operation from June until November. Mining operations were in progess at the Alaska-Juneau mine from the last of June until the middle of October, and the 30-stamp mill was in continuous operation dur ing that period. At the Eagle River mine developments were advanced throughout the year, and the quartz veins which are displaced by faults, causing much difficulty in their ex- ploration. have been located farther
 in the mountain on the various tun- nel levels. The 2O-stamp mill on the property was supplied with ore ob- ta med principally from the upper tun- nel levels and has been operated throughout the year. Encouraging results are reported from the Yankee Basin prospects, and from other prop critics within the Juneau gold belt, and also from the De Groff and Mills property to the north of Sitka.
 The copper mines in the kelchikan district suffered considerable set back early in the year because of the decrease in the market value of that metal, and except at the Jubmo mine operations were suspended during the winter. The Mount Andrew and Rush and Brown mines were idle through out the year: at the Mamie and Stev- enson mines activities were renewed in August, and relatively large amount of ore was mined, which was treated at the Hadley shelter. Ex plor- ations at these mines are to be ad- vanced during the winter mont hs, though the shelter suspended opera tions in November and no ore will be shipped. The largest production and most extensive development during the year was made at the Jumbo mine near Sulzer. The operations on this property were confined to the suphide deposits at the head of Jumbo Basin, and only small developments took place on the copper bearing magnetic deposits located on the north side oi that basin. The Niblack mine was operated from April l5 to October 30, during which period the shaft was sunk to depth of 360 feet and devel. opments were extended on the 300- loot level, where two ore bodies were opened. Raises were made in these ore bodies to connect with the 225-foot evel and most of the ore thus devel- )ped was mined. At the It mine, on K Kasaan Peninsula, mining operations were begun by the It Mining Con- pany early in the spring, and con- siderable body of high-grade copper ,re was developed. A trsmwsy one nile long WIS built at tide water,