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Show B t The Salt Lake Tribune, Saturday, June B Moon Mull ins 12, 1982 Ihiffv By herd and Pom Jolinon Bruce Hammond Assays Done by Wet, Dry Methods Peanuts fin Ihirlin By Armstrong & Baliuk B Charles M. Schulz I'VE PEC CEP THAT I 5M0ULP BE PAlP A (MEMNAcER!) Y MILLION POLLARS A YEAR Bv Sydr-- wc ('athv Cititwit Dick Tracy By WhV Chester Could CALL IN THE SOVgRNlgNT, RICHORC3?" BOOTLEGGING COPYRIGHTED FILMS IS A FEDERAL OFFENSE, VITAMIN" Blondie By Dean Young and Jim Raymond B.C. llagar I lie Horrible Bv By Johnny Hart Dik Browne WMY A(2E YOU CAPPYlte THAT? Assaying is a process used to determine the amount of one or more metals or valuable minerals contained in substances There are two general types of methods used the dry or fire process and the west process In the dry process, the sample to be assayed is melted to separate the metals it contains Anoie sample of gold and silver, for example, is mixed with mead oxide and other substances This mixture is then put into a crucible of fire clay and set inside a furnace to be melted The hot lead oxide pro- duces lead, w'hich picks up the gold and silver and carries them to the bottom of the crucible The impurities and other substances float to the top The remaining alloy of lead, gold and silver is placed in a porous cup and melted in a furnace The lead turns to lead oxide and is removed The gold and silver as a mixture called dore metal The silver is dissolved in nitric acid to separate it from the gold Wet Process In the wet process of assaying, asayers use certain chemicals of a metal in a sample is determined by weighing the compound the metal has formed with the added chemicals In some tests, the metals can be extracted from these Gordo By vwaAs SOUR SET BILL when we BATHE, SO HIGH, pm e Bailey By Mori $ alkcr r S MS SET MAKES MOKE THEY CLOG UP THE THAN A piPEsr PLUMBER Ms Cus Arriola A am f lanceJ And when S'LOOK 1 1 are assaying tests How Gasoline Alley uitliv Andy sends the Star Wars Question and Answer Book About Soace to Anthony Sawyer, 14, Annapolis, Md , for his question made? M! umna ( Ask Andy HE IN MAKES TAB A BLACK House call- - TO MET Tumbleweeds Bv Tom K. Rvan THIS M01LTTH THE COVEEP RLACK FEATHER (50E5T01HE PUBLISHER OF THE 01V IMPIAN'S ALMA MAC! THAT CRACK PACKER O YACKITY FLAK: PROMO LGATDRY PSEON, I EUR YOU INPIAN OF THE MONTH I Garfield Bv chemical ndv Capp By Keg. Smythc Most alloys contain a huge amount of one metal, called the base metal, and then smaller amounts of one or more other metals or nonmetallic materials. Some Are Soft f lg W&P At Kto? Momma j Bv Mell Many pure metals are too soft, rust too easily, or have other mechanical or chemical disadvantages to be useful by But often themselves these disadvantages can be overcome if the metals are combined with other metals into alloys The number of possible alloys is almost endless Alloys consist of extremely tiny particles called grains Each grain is a small crystal that is tilted differently from those next to it Most alloys contain many grams The rate at which f unk inkt r lH-.- Bv Tom Baliuk By R. Myers Broom-Hild- a al- are heated and cooled affects the grain size Usually, the faster they are cooled from a the high temperature, smaller the grains will loys he The most desirable grain size depends on the intended use of the alloy Heat treating and anne aling ANTIQUE AND sleve( anvon B Milton Ganiff Fred Basset Bv w vt-r- le Graham hitooever foodstuff or comestible ESTATE AUCTION may e 7 FRI., JUNE 30 P.M. 1 1 evening SAT 2 30 P JUNE 12 M afternoon OLSON AUCTION GALLERIES c ATFur . Yj 4303 ; com- pounds and then weighed in pure form Another wet assaying method involves measuring the quantity of some agent that reacts with the chemical dissolved out of the ore or alloy An assay office is a laboratory where assaying is performed Many mining and metallurgy cal companies maintain many offices In the United States, the Bureau of the Mint operates as assay office in New York City which assays and purchases gold and silver bullion Canada has a similar bureau under the Royal Mints charge An alloy is a mixture of two or more metals, or of a metal and some other material Jim Dav in I So Main St , ; ! |