Tombstone daily prospector., 1890-08-29
I. NJ. S NJ, co.
What Has Been Done on the Gr ap
 for the Past Year,

EAST SIDE MINE.
 The East Side vein was cut early in May last, at.a depth of 300 feet, ly cross cut 450 feet long, run from il.e third level of the Lucky Cnss mine. The course O. the vein is noItheasi and southwest, and, so far as ascer- tainabie, it is nearly perpendieulsr, having very slight westerly dip if any. The country rock is an extreme ly hard, compact quartzite, dipping 10 the east, as in the Lucky Cuss ground, The vein is very strong and cuts the formation cleanly; but, so far as the work upon it has progressed, it has been of low grade, probably fifteen ounces per ton as an average. wi:h only a trace of gold. There have been occasional spots of better grade, but they are of very small extent. Drift ing in both directions is being yigor- ously pushed, and l3s feet driven to the snuth and 135 feet to the north. In the north drift a raise has been started to make air connection with old workings above. At present we are ventilsting with compressed air, but the completion of the raise will obviate the necessity Of this and give a strong natural circulation.
 The ore is mostly manganese oi good appearance, but rather silicious, and, as stated above, oi low grade. It is expected that continued work 10 the south will bring the vein into limestone, and by all precedent the grade should improve if such Is found to be the case. To the north there is at least 1500 feet of ground about which nothing is known below the surface. The outcrop of the vein is there, and there is every reason to be- lieve that so strong a vein e n not fail to have good places in it.
 sHLPHURET
 This mine is being explored by means of the West Side No. 3 shaft. Here, as in the Lucky Cuss, the deyel- opment work has been of somewhat intermittent character, being regulated by the amount of ore available to de- fray expenses. The ore was first found by following two lateral off, shoots from the West Side -vein, one on the third level, and one on the fifth level. These shoots led to the discoy- cry. at a distance of 470 feet, of 8 nearly vertical porphyery dyke which crosses the sonthwesterly corner of the Suiphuret claim, running thence across part of the West Side and On into the Toughnut, the ore spreading out in the dyke at the intersection of the third level shoot while seeming to cut of that on the fifth level Subse- quent work has proven the existence of both shoots beyond the dyke and that of others of lesser size but good grade also beyond the dyke. These shoots We are new following, and they are the source of the ore now being extracted.
 The comparatively soft ground of the dyke enabled us to open the ground to the sixth level quickly and economically and cross-cut from the West Side provided an outlet for the rock from below the third level Both the third and fifth level workings have ! now advanced considerable distance beyond the dyke, the ore on the fifth level fortunately remaining nearly horizontal, but that or the third dip ping downward at an angle of about 30e. Rather than incuf the expense and risk of long crcss-cuts 10 continue working the upper deposits we have placed a hoisting engine on the third level and haul the cars up the incline 200 feet and thence run them to the shaft and surface without transferring the contents. The engine is operated by compressed air. The prospects in this mine seem brighter than in the others. About 1850 lineal feet of workings have been opened during the year.
 | On the West si e vein the third level has been extended south during the year distance of 400 feet. Most of the work has shown only thin aud poor vein, but it is continuous
 A substantial ore-house has been erected and other minor improve ments made in the surface plant, in- cluding the transfer to these works oi Jour machine shop plant from the lToaghnut, which is used with great