Arizona republican., 1907-07-07


 feet apart. in some instances crossing the bends of the canyon and cropping on it's face. These veins vary from a couple of feet to thirty or forty feet in width, and are in some places even wider. Within them of course are the richer streaks. Sometimes the entire vein matter seems to be of min- eral value and sometimes only R part ot it carries values worth while. This of course is in reference only 10 sur face showings. It may reasonably be expected that with depth these richer portions will widen and in fact only development will show to what mag nitude pay ores may enlarge. The veins however are too large and well defined to warrant a fear that they will become smaller rather than larger. Values and tonnage must increase un- less the general experince in mining be actually reversed.
 That the Mansfield is strictly a sul- phide property is due of course to the fact that it is a wet district. Water level is almost at the surface Along the upper reaches of the creek, tun- nels running into the hillside, often times many feet above the creek bed, are only driven a few yards when wa ter is encountered. Sometimes if is ten or fifteen feet and sometimes a hundred feet or more. but always wa ter may be depended on at no great depth into the hill and in shafts or winzes it is certainty before the le- ,rl of the creek bed is reached. This is perhaps little high for permanent water level, but it is the condition prevailing now and in all wet seasons, SC that the absolutely permanent wa ter level is at no great depth. Nat ufally though. the further down the canyon and the nearer to the desert. the greater the depth to the permanent sulphide zone. This is a point to be borne in mind by the reader in the later ref ference to the Sweet shaft and the other workings, the Sweet being the deepest working but the one at the DWer end of the property. nearest to tue desert. The finest kind of a tes- ;hacnial of the sulphide strength of the ores. is given by the water in the creek which runs e little stream all most constantly even in the dryest weather and which is fed by numerous springs from the adjacent hills. This water carries a strength of alum. sulphLTic acid and other minerals. that renders it so bitter, objectionable and unwholesome. that few of the horses or mules employed in that vii oiLitS will drink it at all and those which do will drink 1t only when very thirsty and in certain places where rnrer spring breaks into the stream. There are two places in the length of the canyon where good water is found that hoth men and stock enjoy. the water being developed from hillside sources. This is no reflection on the oa"'p two or three miles below where ti:e water supply is from a well and Is as fine drinking water as any one could wish for.
 The Mansfield canyon seems to have been formed by the erosion of the wa ter as it coursed from the summits of tlic Santa Ritas toward the desert be- low. Finding it's least resistance be- tween the huge parallel dikes and ore veins above referred to. It is therefore more accurate to say the canyon follows the veins than to say the veins follow the canyon. It is ex- plained also that in the later reference to ore values in the different workings the estimates are those of the super intendent, A. B. Richmond. The writ CT not being an assayer or metallur- sist and MT. Richmond being both. as well as an experienced mining man. his statements would be in any event pore dependable, Moreover they seem conservative and entirely credible to the writer whose only verification can be his general experience and in com pairing the Mansfield ores with those he has seen elsewhere.
 MINES AND ROAD.
 The camp is situated at the lower terminus of the mountain range on the north side of the Mansfield canyon. Following round the heel of this moun- tain perhaps a quarter of a mile, by most excelleAt road, one comes to the Sweet shaft, the deepest working on the property and the one at the .host easterly point, or lowest down or the creek. It is we'll to state at this time that from a point a couple of hundred yards from the Sweet shaft, there branches a newly con structed wagon road that follows up the entire three miles of the canyon to the upper end of the property. Some further improvements are being made to this road: but already a good load Of freight can be hauled over it and In few days it will be an ideal moun- tain road. Recommendations to make 1t county road are now before the supervisors and will undoubtedly be acted upon favorably, for the road also furnishes an outlet to a number of other promising mining properties. This road runs by all the workings of the Mansfield company and within a stones throw of them, except three or four title and exploratory holes on the south side of the range south of the creek.
 The Sweet shaft is sunk primarily for the development of two or three veins that spread to the west some what fan shaped from that vicinity and which there is reason for believ- ing will come together no great dis tance from the shaft, when sufficient depth has been attained. This shaft is now 260 feet deep, straight as a plumb line and we'll timbered and lined. It is equipped with good steam plant and Vulcan hoist. cap- able Of operation to the depth of 500 feet. An air compressor is now in course of erection and when complet-