Bisbee daily review., 1905-11-26
BLACK MOUNTAIN.

Word has been received from the Black Mountain gold property. near Magdalena, Mexico. to the effect that IT. tunnel No. s the entire breast of eleven feet averaged better than $10 per ton This tunnel is Sxl1 feet in size and IS now into the mountain be tween 1.SO0 and 1900 feet The yer licaI distance from the breast of the tunnel 10 surface is now over 750 feet. | Commenting concerning this latest de- velopment A L. Carnahan says in the Houghton Gazette that this means the vein has a length of 1O,77S on the property. with a width running from ten to thirty feet, and in places even seventy feet; and it is conservatiyely estimated to contain 10,O00,000 tons of material above the level of tunnel No. S.
 Six weeks will probably see the 120- stamp mill completed. Each stamp will have a capacity of at least four and a half tons daily. giving the unit minimum capacity to supply 240 stamps. or twice the number under construction. The plan is to erect a second unit of the stamp mill. doubling the capacity of the stamp mill cmfwaa conditions so shape themselves as to warrant it. A cyanide plant is also under construction and will be con- pleted some time in February This will be used 10 treat the tailings from the stamp mill It is calculated that in the stamp mill 60 per cent of the values can be recovered, and the cya- hide process will save almost all of the remainder.
 The financial condition of the cOmpa- ny is in most satisfactory state. and the completion of the entire equipment will find the organization without any indebtedness, either floating or bond ed. It is calculated that the second unit of the stamp mill, containing 12O stamps, will cost between S200, 900 and $250,000. There is ample stock re- serve in the treasury to furnish funds for this purpose. or it may be paid for from an assessment or out of the earnings. Since the entire power and mining equipment is being installed for 240 stamps, the mines capacity can be doubled simply by the erection of additional stamps. It is not un- reasonable to expect to see the addi- tional unit of the stamp mill in opera tiOn before the close of 1906.
 Not only is the power and mining equipment being built with capacity for twice the present size of the stamp mill, but the water supply is being constructed with a capacity for mill four times this size, or 4S0 stamps. This equipment could not be enlarged without an entire reconstruction, and therefore it was deemed wiser to make it amply large to care of the mines fu- ture for a long period. The water sup ply is secured from the San Domingo river. three miles distant, where a tunnel extends under the river bed from a forty-foot well, thus regulating the flow in flood time and placing the pumping plant at point of safety. An ample supply is insured. The waterI is to be pumped by electricity, but an auxiliary steam pumping equipment is provided to insure against the shut down. The pipe line from the pump ing station to the mill is 15,00O feet long and eight inches in diameter.
 The companys power plant is at Magdalena, which is the nearest rail road station to the mine and is there fore the most advantageous place to receive coal. Electricity for Power purposes at mine. mill and pumping station will be generated at the Mag dalena power station through the me dium of Parsons turbine steam en- zines, which are now installed. The wire transmission line from the power plant te the location is twenty-six miles long and is so located as to be immune from floods at all seasons. The wagon road from Magdalena to the mine is such as to permit the haulage of very heavy loads, which has thus materially reduced the cost of freighting the machinery from the railroad. This reduction in transpor- tation costs repaid the cost of road