Show metallurgist TELLS OF MILL PROCESS THOMAS VARLEY DESCRIBES OPERATION OF BIG INDIAN PLANT FIRST CARLOAD concentrates OUT A technical description of the operation of the new notation flotation mill at big indian forty miles southeast of moab Is given by the western mineral survey of salt lake city in an interview with thomas varley metallurgical lurg ical engineer who superintended super intended the installation of the new process according to mr varley the new plant has completely solved the problem of extracting the copper from the big indian ores and the mill Is now operating steadily A carload of concentrates cen Is ready for shipment to the smelters shelters sm elters the moab garage company will start this week hauling out the concentrates several trucks having been fitted up with special bodies to transport the null mill product which will not be sacked the article from the western mineral etal survey follows newest and farthest south flotation plant Is operating and giving perfect satisfaction according to thomas varley salt lake consulting metallurgical engineer who returned to the city tor for a few days this week from the big indian property after completing the installation of new equipment and entirely rehabilitating the old plant for many years the big indian copper deposit lying in san ban juan county in the southeastern corner of the state sixty miles from thompsons Thomp sons on the denver rio orande grande and forty miles from moab has be ben n a white elephant copper ore showed on the surface it out cropped over an area a mile nine wide and three quarters of a mile long but being malachite and azurite treatment of the ore presented a big problem lern A fortune was w spent in developing several processes but nil all tailed failed flotation however according to mr varley has completely solved the problem an extraction of 82 per cent Is being made mill heads averaging 35 per cent copper are being concentrated at a ratio of 13 to I 1 and a product ct 35 per cent turned out the ore grinds easily almost like sugar selection of the right reagents has presented the chief difficulty this has been solved so well wen that the cost of reagents la is averaging but 13 cents rents a ton said mr varley the ore Is mined in open cuts and hauled by mine cars to the mill where it Is put through a blake crusher and a symons disk crusher and re du deuced ced so that it will pass paw t a half inch mesh prom from the crushing department it Is conveyed to a ton ore bin end and from thence to colorado iron works ball ban mill and crashed crushed to a minus 40 mesh in the notation flotation department after passing through a dorr classifier in closed circuit with the ball mill the slimes go to parker flotation machines three of which are used the concentrate cen Is sent fo 0 o a cleaner cell and thence through a door thickener an oliver filter water Is conveyed from the sal mountains through a tour four pipe line 33 feet long prom from I 1 to tons of ore are being dally daily the concentrates are a beautiful malachite green success of unit means the erection of a larger null mill in ninety days eighty horse power boilers and a K W general electric generator furnish the power |