Show LOCAL metallurgical ENGINEER TO SOLVE BIG CONCERN PROBLEMS accordia according ff to announcement in the daily press friday leave eave of absence has been secured by thomas varley superintendent in of the united states bureau of mines of salt lake station to conduct a series of tests of ore for foreign companies during mr carleys Var leys absence R E head assistant superintendent and will be acting superintendent in the interim mr varley will remain in salt lake and act as consulting metallurgist to the bureau and complete his report on flotation reagents during 1926 several interesting and complicated problems will be attacked by mr varley at once ores of the Suli telma copper company of stockholm sweden will be studied with reference to treating them by differential flotation the Suli telma mine situated just north of the arctic circle and over the line in norway consists of a number of mines supplying ore to a central milling plant of 1000 tons daily capacity by means of tunnels and aerial tramway concentrate is shipped by water to stockholm for pyrite smelting smelling sm elting now that the european market for pyrite has become unstable the company finds it desirable to treat its heavy ore containing 2 per cent copper and some zinc by differential flotation in order to secure high grade mill products experiments will also be conducted by mr varley on bolivian tin ores of the campania Estan ifera operating large tin mines at cerro grande bolivia this research too will involve a complicated problem because of the intimate association of the tin iron pyrite trea treatment ament will probably involve gravity concentration of the pyrite and r re egrin grinding ding of the product to float off the iron and allow the recovery of a clean tin concentrate work will probably be done by mr varley on ores for mexican interests mr varley has also been retained by the pioche mines company to check over the metallurgy of the new mill to go into operation at pioche nev this spring mr varley who is a graduate of the university of utah was in charge of ore testing for the american smelt ing and refining company and the federal lead company for seven years in 1917 he joined the united states bureau of mines staff as metallurgist at moscow idaho for a time he was in charge of the seattle experimental station of the bureau in 1919 he came to salt lake to take charge of the intermountain station succeeding arthur wells as superintendent perin |