Show MAKING DRY concentrates the mccracken silver lead company operating at ai mccracken arizona which but recently placed into commission its new milling plant is meeting with success I 1 in producing a dry concentrate according to the miner of kingman same state which says I 1 leonard hoffman general manager of the mccracken silver lead mines company brought in samples of the concentrates that are being made by the new mill on the property that indicate what can be done by an up to date dry plant the coarse product carries about 54 per cent lead and about 35 ounces silver while the fines run about the same in lead and considerably sider ably higher in silver this new mill is said to be one of the most complete of all the dry concentration mills ever erected the dust being cared for to such an extent that it is as dustless as a wet mill dust collectors have been placed over every machine and only the finest of dust going out into the atmosphere with the smoke from the engines the machines have been tuned up and are making not only a splendid product but also effecting a high saving of values when the tails are finally sent to the pits they contain practically no values in either silver or lead the big bins at the mill having a capacity of better than tons tolls each are being fast emptied to allow of the installation of positive feeders instead of the present belt feed which will give the plant a greater capacity and evenness of feed to the machines these feeders have just been built for the company and are expected by truck from los angeles within a few days when these feeders are placed the mill will be run steadily on ore from the big vein which has been opened up to a point where it will be able to deliver the full capacity of mill daily the mine has opened a wonderful body of ore a large part of which may be shipped direct to the smelter without milling this ore will have a higher lead value and a lower silver value than the milled product but either product will return large profits to the company the mine has been under development a long time but the faith of the management is being fully justified |