New Britain herald., 1914-08-31
NEW DREDGING PLAN
 FOR YUKON GOLD
Giant Machine to Work A|olg Ore
 Bearing Greeks.

Dawson, Canada, Aug. 31.-The Treadgold mining operations on Do- minion Creek are beig prosecuted this season along lines similar to those of last year, comprising thus far the washing of muck from the surface at several places with hy- draulic giants. The water is being taken from several gulches and con- veyed for miles in ditches. The ground is being prepared for opera tion with a new type of machines. Charles P. Dolan, superintendent for the company on Dominion Creek, who several weeks ago visited England. where the machines are being con- structed, says one of them was to have left there before the first of this month, and should be here soon.
 It is to be taken to Dominion and assembled immediately on arrival. Each machine will have capacity of about 15,0OO cubic yards a day, as much as the largest gold dredge in the Klondike can handle. More ex- actly speaking, the machines handle 45O cubic meters an hour, and a
 
 cubic Y; ~t They are known as the Lubeck, edge and excavating ma chine. ):~ly one is coming at frs, so tha. local conditions demand al- terati, ms of any detail they can be mace before the other machines are sent.
 Special Trip to Leipsic.
 MT. Dolan when in London this spring made a special trip to Leipsic, Germany, and vinicity where he saw twenty-one of the machines in opera tion. Some were digging coal, some chalk, and others gravel and other materials. All, he says, were work ing with entire satisfaction. The ma- chimes are mounted on railway tracks, and can move forward at the rate Of eight feet a minute. For the pur- pose of providing a washer for the alluvial gravels to be excavated on the creeks near here two parallel tracks will be used. The excavator will be on one track and the washer on the other 1t is intended to use a grizzly for washing, but other de- vices will be used, and after the gravel goes through the boxes it will be picked up on the tailing stacker and carried to the waste dump somewhat after the way tailings are disposed of by the modern gold dredge.
 The Lubecker machine weighs but seventy tons and photographs of it give 1t the appearance of one of the large modern steam shovels excepting that on one side is the long arm of the excavator and on the other the long arm of the stacker, like two huge wings. The digging is done with series of buckets which drag in ward to the machine proper. The machine digs to depth. of seventy feet below itself, or to height of seventy feet above itself, and the number of buckets varies according to the length necessary to reach.
 Low Tracks Used.
 Heavy manganese steel lips will be provided on the buckets and conf1- dence is entertained the machine will be able to dredge all the bedrock es> sential for the recovery of the gold. especially as the machines can move backward and forward over the tracks taking off layers. It is not decided whether the machines in their work here will work along tracks placed on bedrock or along tracks on the present surface, but some have thought possibly it would be best to excavate first to bedrock and then operate there, in which case the buckets would be dragging from point above the machine instead of from below. The low tracks are used a great deal in Germany.
 David Elliot, the shovel expert who has been with MT. Treadgold for years, went to London last year to assist in plans for the Treadgold ma chimes. He is still there. Mir. Elliot is said to be one of the most expert shovel men ever in the country. MT. Dolan, an old time Klondike operator and for the last several years in the hydraulic department of the Tread gold company, went to London to give his advice as to the arrangements for the washing device and to witness the operation in some of the ma- chimes now in actual use and there- by have working familiarity with them.