Show A MODEL laboratory metallurgical department of the orange blossom extension minin mining g milling co the laboratory is in charge of J galbraith al E who is prepared to make rapid determinations and assays essays 0 of f th the e d different i f ores the equipment consists of a braun chipmunk crusher which will reduce rock from about 2 inch in size down to 14 inch and smaller this machine is made with steel frame and malleable iron jaws and fittings the paramount feature is the rapidity with which the material is crushed the machine having a capacity of about pounds per hour this product is then fed into the disc which will reduce it with one grinding to mesh the latter machine has a capacity of about one pound per minute these two machines working in conjunction perform much of the hard work usually found in an assay laboratory and with them the assayer is enabled to reduce a large sized sample to mesh and then quarter it which gives more accurate results A braun rotary flame combination furnace is used for melting and cu peling which type has a very large capacity the gary cary hydrocarbon hydro carbon burner used for operating this furnace is known in nearly every mining camp throughout the entire world as it is the most efficient and economical burner for assaying purposes it gives an intensely hot flame is easy to operate and requires but little fuel another interesting apparatus used in making copper and lead is the guess haultain electrolytic cabinet this apparatus consists of six units and with it the assayer can turn out copper as says within from three to four hours time and lead essays assays in from two to three hours time the old process would require running the assays essays over night or from ten to twelve hours and even longer while obtaining the results the same day as started permits of the rapid checking of the returns this equipment is now being installed by all of the large mines and metallurgical offices and is rapidly becoming the stand ard for making copper and lead determinations the entire equipment for their laboratory was furnished by F W braun los angeles who are extensive dealers in this class of apparatus and also manufacture a most complete line of modern labor saving appliances for metallurgical work |