Mohave County miner., 1910-02-12
Large Force at Superior & Boston


 in underground and surface work on the Superior & Boston property, locat- ed in the Copper Hill district, four and a half miles east of Globe. The con- pany is now directing its energies to- ward putting the mine in position to ship ore proftably. The 200-ton bins recently constructed just north of the McGaw shaft have been filled with ore, and the dump is now receiving much of the ore taken from the mine in the course of development. The pump station on the 600-foot level of McGaw shaft was finished the first of last week and has been timbered throughout. A force of men is now engaged in finishing the station north and south of the shaft on that level. This station extends for twenty-five feet north and south from the shaft. The large pump station on the sixth level is east of the shaft. This station is fifty-two feet long and is being most substantially timbered. The crosscut Connection between the McGraw shaft and the Great Eastern workings of the Superior & Boston mine was made last week and the connection of the Su- perior & Boston Copper company's Great Eastern drift with one of the main drifts driven east from the Eu- naf fl of f hn A Apizn al mine is practically completed. This 6OJ-foot level connection will afford better ventilation for both mines.
 The railroad leading from the Ari- zona-Commercial to the McGraw shaft on the Superior & Boston property has been finished, so that shipments of ore from the McGraw to the shelter can be made at any time when the man. agement desires to begin production. The date for commencing shipments has not yet been set.
 at present, two raises are being put mp on tie Great Eastern ore body from the 600-foot level. One of these raises is located in the Great Eastern drift, sevenJy-ive feet west of the Great Eastern winze and the other one is 100 feet east of the Great Eastern winZe. These raises will connect with the intermediate level, ninety feet above the 60O-foot level. The manage ment of the Superior & Boston Copper co upany is now making preparations to resume sinking. the Great Eastern win :e. This winze now extends thirty feet below the sixth level and goes down in ore with the vein.
 The sinking of the McGaw shaft has also been continued. The bottom of this shaft is now about fifteen feet be- low the sixth level and sinking will continue to the 35-foot point, which will probably be reached by the mid dle of this week. Work on the cross cut to form the stump of the pump station on the 6OO-foot level will then be begun. This crosscut for the stump is now about ten feet long and, when completed, will have a capacity of 30, 900 gallons. Work on the stump of the McGaw shaft is being continued before driving the crosscut for the pump station stump. In order that the con- crete forming the foundation for the pump may not be broken by the blast ing, the installation of a Prescott pump on this level will be commenced about February 15. The capacity of this pump is LOGO gallons. The water column for the McGaw shaft is now on the way to Globe. Two 25O horse power Stirling boilers also, are expect ed to arrive at the mine in a short time. These boilers will be added to the present boiler plant at the McGaw shaft.
 The long drift being driven west from the Gardner shaft on the 4OO-foot level has run out of limestone into dia- base. With about 100 feet more of driving, this drift will reach a point directly under the Black Oxide winze. The drift driven west from the Great Eastern workings has reached the property line.
 In a comparatively short time, the Superior & Boston mine will doubtless begin production. While it has not yet been decided just what the daily shipments will amount to, it is certain that not less than fifty tons day will be sent to the shelter. Frank H. Pro- bert, consulting engineer for the Su- perior & Boston Copper company, is expected daily and during his stay in