Mohave County miner and our mineral wealth., 1920-02-21
ARIZONA BUTTE
 TUNNEL APPR0CHES
 1000 FOOT STATION

The deep tunnel of the Arizona Butte Mines Company is approaching the first 1000 foot mark from the portal and there was driven in ad- dition nearly 250 feet of parallel sec tion to avoid heavy ground in vein formation at shallow depth. After the 1000 foot station is reached cross cuts through the Prince George vein will be driven at frequent intervals. The principal known ore shoot will be reached at about 2500 feet from the portal, but it is believed that the re- zion of the first likely ore zone is about to be penetrated, although the vertical depth on the big vein at pre- sent breast is only 120 feet. From now on the tunnel gains depth more rapidly than first 1000 feet from the portal. ....
 Robert Linton, consulting engineer for the property, recently spent five days going over the whole situation and has recommended that the tun- mel driving be pushed with great speed and the whole property be opened up as rapidly as possible.
 This will entail improvements in equipment, especially in tunnel ven- tilation, and the resumption of mill ing operations from upper mines This is good news indeed, as Kingmar people have unlimited faith in the en- terprise and consider the property as having immense potentialities witt deep development and there are mum erous local mining men who have bee, familiar with Stockton Hill mines fol many years past, who believe this property, when fully developed, is cer tain to become one of the leading silver-lead-gold ore producers in tho west.
 Stockton Hill mines, now largely controlled by Arizona-Butte Company have steadily produced high grade shipping ores over a period of fifty years and yet it is only a few week; ago since air drill were used for the first time in mining the ore, whereas the veins and ore bodies are much more economically mined by machines and this circumstance alone is reason enough for lack of progress to date in attaining big production.
 The mines have lacked adequate capital and consolidation of the var. ious mines, until recently.
 For every ton of direct shipping ore produced there has incidentally been broken from two to four tons of good mill rock and even 80 per cent of the ore assorted out for shipment would have brought double the oper- ating profit had it been milled, as it all contains silica and zinc on which hauling, treatment and freight is paid and zinc is not only lost by lead smelters but often penalized. The ores of Stockton Hill contain only 3 per cent iron and are easily milled to high grade lead and high grade zinc concentrates in seperate pro- ducts. ''-
 Resumption of milling with ade- quate working capital will materially increase earning and furnish data fol a large mill to be erected at the portal of the deep tunnel in the future.
 The tunnel has at present a flow of water equal to 10000 gallons pc, day and this flow is steadily increas. ing.
 The tunnel will of course cut oper. ating costs in two, by doing away with numerous shaft operations pumping, costly mountain grade haul, age, furnish ample water and make possible the concentration of all opera. tons at one point within 71a miles of railroad over easy grades.
 Last weeks progress in main face of deep tunnel was Al feet advance.