The Arizona sentinel., 1894-08-04
TEKE HARQUA HALA
 GOE.D MINES.

Harqua Hala Gold Mining Com pany, limited.
 Owing to the doubts having been expressed about the future supply of ore bearing rock at this company's properties, the directors requested Mir. Wartenweiler to visit the mines and report. The report, dated June 23rd, has been sent around to the shareholders of the company. The question at issue was whether the ore bodies would continue in the porphyry after leaving the quartzlte. Mir, Wartenweiler conducted some pros pecting operations and found in every case that the ore bodies were contin- uous. In the course of his report he says: "My investigation was confined principally to the lower workings of the Bonanza mine, and the porphyry gone in particular, since the apprehen- sion has been expressed that the DOT phyry threatened to absorb and re, place everything of value. From the fifth level downward the ore channel evidently enters into the porphyry, and the quarzite occurs only in frag- ments. A similar condition of affairs pertains to the iron vein. Near the surface we had footwalI of limestone and a shale-quarzite hanging wall. The change of formation can now clearly be traced in the iron vein winze, until at the sixth level the iron vein is entirely in porphyry. In order to prospect the seams of ore encount- cred by the main crosscuts on the sixth level I caused the winze to be started at the point where find of base ore had been reported. The seam, about ? fit. thick, fattened considerably in sinking some 10 it. upon it, but 1t had certainly not weakened and the value of the ore taken out yielded from SIC to $l6 per ton. The course and in clination correspond remarkably we'll with the footwall section of the Dis covery vein. At crosscut No. ? an- other seam, about ? fit. thick, is ex- posed. I beheve this ore was valued at the time at $l0 to S20, which about agrees with some samples taken by myself. (The amount of copper in the shape of pyrites in both cases is not sufficient to cause very serious discrepancy in milling.) At point near the top of the new incline shaf a winze was started some time ago showing the iron vein in it's place anC shape. This winze was discontinued firstly, because the vein stuff was con- siderably mixed, and showed only about $6 in gold. The south drift or the Iron vein has up to lately, anc quite persistently, carried all the characteristics of this vein, some oi the ore being of very good grade
 Here we have, then. four diferen points-two on the Discovery and tw on the Iron vein-all of them on tn sixth level and all in porphyry, show ing ore of good grade. 1 cannot in tn
 face of such evidence, consider a logical, the assumption that the life c these veins ends with the advent c the porphyry. My opinion may re main unsupported as long as or bodies are not actually opened up, an had I not feared to hamper and inte
 rupt the regular exploitation of tn
 mine, work in downward directlo upon various points would have bee organized at once The seventh levc
 will, of course, admit of a more sy
 tepatic and economical mode of e, ploring this region. From minera ogieal point ofview, can see no re-
 son why the porphyry should not ore. bearing. ."-Engineering and Mi
 ing Journal.