Mohave County miner and our mineral wealth., 1920-06-19


 o. D. mine a trip to that property will surely convince you of the big things that are being carried out both in de- velopment and equipment. In the first place a road is almost completed from Berry siding, on the Santa Fe, to the mines. The survey had been made over direct route reaching the foot of c. o. D. hill over a level country and on splendidly built road. When completed the run by automo- bile from Kingman can be made in about one-half hour. From the foot of the hill the road has been surveyed and regarded to about eight percent, where heretofore the grade was fully 25H. This part of the road has been widened so that two cars may pass at any point on it, which will be neces- sary on account of the large amount of travel that will go into the camp. This work has been almost completed, there remaining only few short links to make the road usable throughout. With a rain on the valley part of the road and rolling down with the big roller tractor the road will be a boulevard all the way through. This work has an important bearing on the shipments of ore and the haulage of machinery and supplies into the mine, the cost being cut at least one-half.
 But the things that impressed the editor was the splendid plant of ma chinery that had been placed on the property. The mine is equipped with Dewco electric hoist with 5000 pounds rope pull, driven by 75 kw. motor, an Imperial type Ingersoll- Rand compressor; Gould triplex sta ton pump and Cameron No. sink ing pump. The headframe is massive and capable of handling the heaviest strains taht may come upon it.
 All machinery is housed in we'll con- structed buildings, there being an of flee building, change rooms, bunk houses equipped with shower baths, we'll appointed boarding house, black smith shop, timber yards fitted up with band and other saws and fram- ing devices; laboratory building, fitted with the latest devices for the testing of ores. This building is 26X 40 feet and houses the engineering department of the mine an uptodate assay office, and the testing room. This room is equipped with a jaw crusher, a disc pulverizer, set Sturte- want rolls, Overstrom universal table, laboratory ball mill, Akins Notation machine, one of the latest and most successful of the oil Notation machin- es on the market; Haynes Notation machine, which has been a pronounc- ed success in the United States and Mexico and British Columbia. These machines are driven by electric pow CT from the big plant in Kingman. This plant is being used to test out the ores from all the Dudley mines and from these tests flow sheet wilt be worked out to predicate the meth cd to be employed in the big mill that 1 WILL SVOlk UC SlSSNSu oS eAAS iiiitAS' 1A'S metallurgical part of the work is un- der the supervision of w. w. Wlddow- son, who is also consulting engineer for all the Dudley properties. MT. Widdowson will soon have the flow sheet ready to work out the milling plan. The first unit of the new mill is to be of 100 tons capacity and this will be added to as the mine is opened at new levels. All the ores from the various mines are to be tested out in this plant and if found advisable all the mines will be equipped with mills and Notation plants to handle their product.
 The first mill unit is to be equipped with a Colorado Iron Works rod mill. A ball mill will crush the ore to the desired fineness for the Notation ma chimes. The other machinery will not be selected until the flow sheet has been made after all necessary tests have been run. The new milling plant will contain every metal saving de- vice that the testing plant will in dicate is necessary and it is expected that this plant will be one of the most complete and economical in the state. The management purposes to make thorough testing out of the ores so that when the mill is in com mission it will be able to handle every class of ore that may come from the mine. Had this method been obser- we'd by the other mine owners when they built their plants there would not be many idle mills in this state today.
 The shaft is now being sunk below the 300 level on the western part of the company holdings and this shaft will be carried to the 500 with all pos sible dispatch. A big pocket has been put in the shaft below the 300 level which has capacity to care for all the ore and waste that may be broken down in the further exploitation of the mine above the level A cross cut is to be run across the counry