Mohave County miner and our mineral wealth., 1921-12-23
PROGRESS OF THE PAST WEEK IN !
 KATHERINE GOLD MINING SECTION
(By William P De Wolf.)

Development ot ore OodleS at deplh' rather than at shallow levels, is the new program in force at the majority of the mining properties in the gold camp of Katherine and Union Pass. Such campaigns are now in force at the bonanza Katherine mine, at the million dollar Gold chain mine, at the Adams mine, at the Treasure Vault mine, at the Illinois Katherine mine, and at the Katherine Rand.
 Development below the 1O0-foot level in the winze on the 4OO-foot level in the Katherine mine, has, how ever, been held up for considerable period by the wrecking of the 225 horse power pneumatic engine which had just been installed. When the en- zine was tried out for the first time, a few days ago, the fly wheel tore loose from its bearings and complete ly wrecked the entire engine, killing one man, and badly injuring another. Fortunately, however, the old plant of machinery has not been dismantled, and will be utilized for development work on the 100-foot level in the winze, 500 foot depth, and the levels in the main workings until such time as the wrecked machinery can be re- placed. It will, however, probably be several months before the immense Katherine vein can be developed at deeper levels.
 Preparations are being made by the Aladdin Divide Mining Company to sink a double-compartment shaft to depth on the California group of six claims adjoining the Katherine mine. The Aladdin company had negotiated for the purchase of acreage in the vicinity of the Gold Chain, but aband- oned this plan when the opportunity was presented to secure acreage in the heart of the district and bordering the bonanza mine of the camp. c. N Miller, of San Francisco, who domi- mates Aladdin affairs, states that his engineers assure him that the Pyra- mid vein ,one of the large and well mineralized Assures of the Katherine district, passes through the California group, and that it is probable the rich vein opened in the north crosscut ir the Katherine mine, also extends into the California group.
 A minor accident to the hoist at the Gold Chain mine delayed shaft sink ing for several days last week. The hoist is now in good working order however, and shaft sinking has beer resumed. The shaft now has a deptt of about 20 feet below the 1OO-foot level ,and will probably enter the big Gold Chain vein on it's dip within from 10 to 15 feet more of sinking. The objective is a depth of 200 feet, al, though it is not improbable, that Sup erintendent Nourse will receive in, structions from San Francisco to sink to depth of 300 feet before starting anothel level. If this plan is carried out the second level in the Gold Chain mine will be run 200 feet below the 100-foot level. Superintendent Nourse states that drifting in the vein on the 1O0-fOot level will soon be resumed to the east of the shaft. He estimates the ore at present in sight above 2 depth of 100 feet at about 200,OOC tons.
 At the Adams mine the shaft is be, ing decpened rapidly, and by the fore part of next month will have reached it's objective of 200 feet. There the big vein, which was crosscut a dis tance of 65 feet on Sle 100 foot level will again be crosscut and developed The prospects for the early coming-ir of the Adams are exceedingly bright and it is not unlikely that they vii be realized soon after New Years.
 At the Treasure Vault property, ono of a number in which M. B. Dudley k largely interested, sinking is pro gressing below the 5O-foot level witt a depth of 100 feet as the next ob jective. The Dudley interests hay, ample capital with which to develop the Treasure Vault, or any othe' properties they may acquire, and thei' advent in the Katherine district car ries with it the guarantee that an! property taken over by them will re ceive the mining attention necessar! to prove it's value. The Treasure Vault is immediately to be equipped with machinery for the purpose O opening at depth the 14-foot veil which was crosscut on the, 50-foo level. The machinery will be in plac and the deep development campaign in force very soon after the first O January, 1922.