Mohave County miner., 1910-03-05
Arizona Commercial.

Since the Arizona Commercial smell ter resumed running after the tenn porary shutdown necessitated by leak ing water jackets on the furnace, from POO to 22O tons of ore has been treated daily in which has been included, for the past few days 50-ton daily ship ments of ore from the mine of the Su- perior & Boston Copper company, says the Bisbee Review. The Arizona Commercial ore making up the present shelter supply averages about per cent copper. The shelter at present is running smoothly, and although the repairs made on the old water jackets will probably not prove permanent, the new jackets already ordered will, of course, not be put on until circum- stances make it necessary.
 When treatment of ore was resumed by the shelter, the usual force of about $50 men was again employed by the Arizona Commercial Copper com pany. A great deal of ore is being broken down from the stopes along the drifts on the sixth level; smaller quantities of commercial ore are being mined on the fifth level and a little ore is being taken from the fourth level also. The drift west from the winze put down from the sixth level at a point about $50 feet east of the Flu rueka shaft is l25 feet long and the eight-inch vein of copper glance which was encountered there last week still continues to run parallel with the main lode. From the point where the strike was made to the present breast of the drift the width of the commer- cial ore opened by the drift has varied from three to five feet. Much of the ore in this drift runs as high as 10 per cent copper while the copper glance from the rich streak, of course, assays much higher.
 The drift driven east from the winze nearest the Eureka shaft has advanced for 1l5 feet in ore averaging about ! per cent. From the 75-foot winZe put down from the sixth level drift, at a point about 100 feet west of the Black Hawk shaft, drift has been driven westward for about fifty feet through ground carrying commercial quantities of copper. As yet no drift has been driven eastward.
 On the 7O0-foot level, the crosscut driven northeast from Eureka shaft is 40 feet long and is expected to open the Black Hawk vein with about l5 feet more of driving. On the 7th level the Black Hawk lode is about 20 feet distant from the Eureka shaft in a straight line, but the northeast cross cut is not being driven directly to- ward the vein, owing to the necessity of prov.ding a straight runway for the ore cars from the shaft.
 The three pumps working on the 7th level are keeping the water situation under control. Two of these pumps have a capacity of 75O gallons each. The capacity of the third pump which is of the Prescott make, is 1000 gallons per minute. The Arizona Commercial pumping plant is raising over 100000 gallons of water from the mine daily. During the past few days the flow of water has lessened slightly.
 The management of the Arizona Commercial Copper company states that the output of fine copper from the shelter for January was slightly over 100000 pounds and that the average monthly output, in the near future is expected to be between 400, ,000 and 5OO,OOO pounds. Commercial.
 Calumet Sz Arizona