Bisbee daily review., 1918-03-31
BLUE BELL OPENS NEW ORE BODY AT
 TWO LOW LEVELS
Arrangements of Mines in Dis trict of Mayer Plan Big Development Programs for Future Consummation.

MAYER, Ariz., March 30.-Undoubt- edly the most important strikes in the
 copper mines of the Mayer section
 are those recently made in the Blue
 Bell mine on the 500 and the 1200 foot
 levels. There are six lenses Of ore in this mine that outcrop or have been worked from the first level down
 through the intervening levels to the 1000, the pay ore averaging in width
 from eight to forty feet. On the newly
 opened 1900 foot level, two of the largest of these ore bodies have recent ly been opened up and there is every
 reason in the world to expect the oth- CT shoots to come through to this new level But the interesting thing so pleasing to tsle mine management and to everyone who has at heart the fut- ure of the Mayer district, is the find ing of two new ore lenses which did
 not outcnop but have been found apexed at the 800 and the 1.2O0 levels. Being the length of these two new ore lenses upon what has been proven in the developmet of the other six ore shoots, which are stronger and higher grade on the 1000 foot level and the two shots on the 1,2OO level. there is reason to expect that the depth of the mine will be at least another 1,200 feet but there is no one to say there will not be other lenses developed when the present depth is doubled.
 Mine Superintendent DeCamp is just as much at sea as to the future depth of the mine as anyone. Yet, he firmly believes that the ore lenses l have only just commenced ito appear, The bottom" may be reached in 5000 ! feet or. it may be five or ten thoussnd ] feet It has. not yet been determined ! what the eruptive formation of the Blue Bell district is but the theory most generally held is that it is the granite of the Bradshaws which makes l its first appearance south and west Of ! the DeSoto mine which would make l it about five miles from the Blue Bell l mine Easing the possible depth to 1 the granite at the Blue Bell by its dip south of the DeSoto mine, it would be 1 several thousand feet.
 At any rate. the management of both ! the Blue Bell and the DsSoto. for the l DeSoto mine has much the same ore | formation as the Blue Bell. are plan i ming big things. Superintendent De Camp expects to be breaking 150 tons ] daily on the 12OO-foot level and soon ! a drift that is being run on the 800 l level south to tap the Blue Thunder | ore 220O feet from the main shaft | There is reason to expect that new ore bodies will be found between the | shaft and the Blue Thunder strike for l it is practically all virgin ground with 1 aycpllanf Gr1rfaca nmfqrOnnfnnC'
 The development of ether mines in | this Mayer district at depth is proving | up the Blue Bell in every case. In the l Arizona BinghamptCl, the ore is in l lenses just the same which have been | found to continue unbroken from the | upper levels to the deepest level, 500 | feet. Some of the best ore bodies in l the mine have apexed on the lower | levels. In the Copper Queen mine, | the same condition exists. At the pres ent time, an excellent. grade of chal- 1 copyrite ere is appearing in the new | work in the mine approaching the 500 | foot level below the adj. which is sup | posed to be the same Tense that was | encountered 200 feet higher up where | 8 feet of 6 percent copper was cross l cut
 These ore lenses can be likened to | cigarettes packed so tightly in a box l that they become oblong. Now that | their occurrence is understood. it is | not difficult to find them as a new lev el is being opened up. |
 The sys em of diamond drilling for ! exploratory work in the big mines in this district, is to be extensively used l in the future, in the place O: drifting | with tunnels. Both the Blue Bell and i the Arizona Binghampton mines have | tried the system thoroughly. The | plan is to drive straight drift north | and south and diamond drill every ten | feet on each side, which will crosscut ! the formation and all ore can be | blocked out on the level. The cost is | from two to three dollars per foot, of | core and a great deal Of unnecessary l work and expense is saved. Some of the cores in the Binghampton mine on the 600 foot level showed returns of 8 percent copper. After the level has been drilled, the ore can then be broken most advantageously with no false moves.
 Mine owners are greatly encouraged in this district, by the deep findings of ore in several larger mines. The Yavapai schist has many times been turned down as an unknown quantity in mining. Some of the best mines now producing in this section have been repeatedly condemne1 by tha best mining engineers of the country. These same mines are now making good and there is a reason to expect them to develop into class among the largest mines in the state.