Bisbee daily review., 1917-05-13
Drilling Operations Show Jer- ome Verde Has Body of Copper Ore Similar In Value
 Character To United Verde.
CALUMET & JEROME IS
 NOW ENTERING SCHIST
Development of Recent Strike On Copper Chief Property Demonstrates Its Value As An Ore Producing Agent.
BY WILLIAM p. De WOLF.

| PRESCOTT. Arizona, May I2.-In- vestment interest in non-producrng
 mining properties in the vicinity of
 the United Verde and United Verde Extension mines at Jerome has of
 late been stimulated considerably by
 favorable mineralogical changes at number of them which tend to de monstrate the continuation of the rich ore bodies, opened at depth on the United Verde and United Verde Ex-
 tension estates. to points we'll beyond
 their boundaries.
 Diamond drilling operations at the
 property of the Jerome Verde com pany, for instance, have disclosed with in its confidence body of copper ore
 of similar value and character to the
 one that is being so prohtably mined , in Verde Extension ground Recent developments at the property of the Calumet & Jerome company have re-
 yealed geological conditions equally
 as satisfactory, and the same state ment applies with similar force to con- ditions which attend development of the estate of the Jerome Victor Fix tension company.
 C. & J. Shaft In Schist.
 The Calumet & Jerome shaft is now entering the Yavapai schist and is showing pronounced copper mineraliz- ation. The condition is in line with the findings of the engineers who somewhat recently reported the prop erty to contain the proper formation in which large ore bodies exist. and who also agreed it would not be nee essary to sink the 3-compartment shaft below a depth of 800 feet to enter the Yavapai schist. In the Unit ed Verde and United Verde Extension mines this formation is the ore maker and the source of dividends. The same formation prevails in Jerome Verde workings and at the depth penetrated by the diamond drills is carrying finely disseminated chalcopyrite
 Victor Ex In schiss.
 On the 1900 foot level of the Jerome Victor Extension property the lateral has entered an intersection of Yavapai schist and diorite that shows copper A water course was tapped at the same time. but the flow from 1t and from two other water courses. previously tapped. is being without difficulty by the pow erful electrically-driven pumps recent ly installed. Authorities on the ter ome district assert that the acid dykes or water courses are conductive to the making of ore and should be followed. Iron pyrites and chalcopyrite continue to be encountered as the drift and crosscuts are extended in the 12-foot evel The additional mine machinery several weeks ago at a cost of S40.000. is expediting development work with the result that conditions It the mine are more satisfactory and he prospects for encountering com nercisl ore more roseate than ever before.
 Copper Chief Strike.
 Development of the recent strike on he Wonderful claim of the Copper Thief estate at Jerome is demonstrat- ng it's value as an ore producing Igent The prospect shaft to the forth of the main shaft has at this ime depth of 75 feet and is pene- rating a ledge of schist about 5 feet vide. The deposit shows considerable and assays from to 10 'er cent copper. Jack-hammers are 'eing utilized in sinking. through the medium of an air line connected with he compressor in the main shaft ouse. The importance of the recent nd has its genesis in the possibility offers of protracting some months go by the engineers who examined he property in the interest of the ireen Monster Mining company.