Mohave County miner., 1916-09-16
ARIZONA COPPERFIELDS WILL
 EXPLORE ITS VAST HOLDINGS

There are also two drill holes on the property, one of which has reach ed depth of 63 feet, showing a thick ness of 50 feet of ore that averages 1855 per cent copper. The other had just struck the orebody at a depth of 94 feet when the drill broke down. It showed ore assaying 1A per cent cop per in the bottom of the hole.
 ! There is also a shaft that has at tained a depth of 61 feet inches, 59 feet of which is in the overburden or leached zone, carrying small values in copper. At depth of 60 feet wa ter was encountered and the values began to increase, and at a depth of 61 feet 6 inches assays were obtained running from Is to 3.38 per cent cop per. These developments are in line across the deposit, showing that it has a width of over 700 feet.
 In addition to the workings de- scribed there is a small prospect hole about 1000 feet from the 61-foot shaft. This has been sunk in the capping or gossan. It encountered low grade ore at a depth of 10 feet. This ore as saved from F to 1 per cent copper. There are still 20 feet more to be sunk in this shaft before the water level is reached, and it is expected that when this point is passed the richest sul- phide ore yet opened up on the prop erty will be encountered.
 The deposit has been shown by pre- liminary examination to be 700 feet wide and to have a length of at least 1000 feet. The ore has been proved to have thickness of 50 feet. These figures indicate, subject to further checking up, 35,OOO,OOO cubic feet of ore, which on the basis of 1S cubic feet to the ton, are equivalent to g. 692, BOT tons. This tonnage, on an average assay of 1855 per cent copper, or 37 pounds per ton, would contain 99,615,359 pounds of copper, which at 15c per pound, the average price of copper over a number of years, repre- sents a gross value of 14,942 1903, from which, of course, must be deduct ed the cost of opening up the deposit, mining and smelting charges, etc. In other words, it would appear that there are already exposed gross values amounting to almost three times the full authorized capitalization of the company at par value.
 The proving up of ore in a property of this kind by means of churn-drill holes located at intervals of 200 feet, forming squares 200 by 200, is com paratively simple and inexpensive matter. Every additional square de- veIoped by drill holes will mean an- other 154,OOO tons of ore of a gross value of $S54,7OO.
 Thus far it has been shown, as al- ready stated, that approximately 16 acres are underiaid by copper ore, but all of the claims show small values in copper, ranging from 1 per cent to 2 per cent, indicating that there has been copper there, but that it has been leached out, so that undoubtedly the concentrated values will be found at depth.
 The topography of the property is typical of the Arizona desert, being entirely devoid of timber. There is enough water on the property, how ever, to supply a concentrator of 300 tons per day capacity, and additional water supply may be developed by building dams farther up in the noun tains to impound it. For nine months in the year there is an abundance of water tc supply any size of concen- trator desired. This water runs down the gulch and passes close to the mouth of the tunnel through which the property is being developed
 The two tracts of ground contain 320 acres, of which 120 acres belong to the original Copperfield POrphyry Mining company, while 200 acres rep resent the 13 claims acquired in addi- tion thereto. The company was or ganized for the purpose of carrying out a comprehensive development program, in order to bring the prop erty up to the productive and dividend paying stage.
 With this object in view, President Ridgely is now in Kingman. He has already visited the property and feels deeply impressed. In a few days the consulting engineer of the company will also arrive.
 The object of the visit is to lay out a systematic campaign of development by churn-drilling.
 As a result of the advances in DOT phyry mining and the metallurgy of