b'Continued from page7 of the American participants said, theNRCA ReleasesAir 1000 years old, yet still in use. Imper exchangeofinformationbetweenPollution Booklet nations isf value tollfs . we areTheNationalRoofingContractors vious tiles came into being at least 1000o a o uyearsbeforeChristwhentheywereallatdifferentlevelsoftestingandAssociation recently issued apublicahand made in Egypt and Greece,saiddevelopment and havedrawn varioustion entitled "Control of Air Pollution JamesH.McLaren,TremcoLimited.conclusionsfromourwork.AfreeEmissionfromRoofingEquipment". McLaren presented a paper compar exchangeofthisnaturewillmostThe report was jointlg prepared by the ing"NorthAmericanandUnitedcertainly advance the entire industry.associationinconjunctionwiththe Kingdom Practices and Experiences inFuture ABC issueswill carry moreUnited Slate,Tile,CompositionRoofRoof Maintenance," which should be ofconference details.ers,DampandWaterproofWorkers considerableinterest tomostroofingReportRun on Tin Disc\'sAssociation, and comprises work done contractors,andwillbepresentedinCarl Jacobsen, American Associatedthrough a period beginning with July greater detail in a future issue of ABC.Cos.,Atlanta,Ga.,reportsthat there1973and ending late in 197 4. RobertG.Matheyrepresentedthehas been a run on tin disc\'s in the stateContributionsto the study came in U.S.NationalBureauofStandards,ofTexasandhasheardrumorsofafrom allindustrysegmentsincluding presentingapaperon"Preliminaryshortage in other areasofthe U.S.representativesfromthePetroleum PerformanceCriteriaforBituminousThe problem apparently, isthat tinIndustry,EquipmentManufacturers, Membrane Roofs",which willalsobesuppliers can get more as scrap than asRoofingContractorsandMaterials ontheMidwestRoofingAssociationtin disc\'s. AAC customer\'s don\'t needSuppliers. program at the end ofOctober.tobeconcerned,however,saidMr.Thebookletsummarizesthebasic Jacobsen,astheyhaveareliablefacts and statistics on the application of sourceandexpectstohave asteadybothhot andcold applications onthe supply available.structuralroof,discussing hightemperatures and viscosity in relation to air pollution,aswellasthevarious NRCA OpensMembership tomethodsofheatingandcontroling RoofDeckContractorsthese elements. TheNationalRoofingContractorsCopies ofthisvaluablebookletare recentlyannouncedthatroofdeckavailable from the association at $1.50 contractorshavebeenacceptedforeach.Theiraddressis1515North membership in the Association, recog Harlem Ave.,Oak Park,Ill. 60302. nizing the importance of this group of industrypeople.RecenttrendsareAsphalt Emulsion Booklet Robert ilfoore, Armm Consultants (U.S.) wos drafted to tell the audience about the Armmtowardsroofingcontractorinstalled"Seal CoatandSurfaceTreatment Rayngergun,whichiswidely used inthedecks,thusplacingtheentireroofDesignandConstructionUsingAsU.S. to meosure temperatures inavariety ofresponsibility in the hands ofasinglephalt Emulsions," by Dr. Norman W. roofing requirements. It is manufoctured andfirm.McLeod, has been published in booklet soldthrough Morpro, Inc.The responsetoformbytheAsphaltEmulsion this relotively new technical aid for the con Manufacturers Association (AEMA). tractor drew many interested spectators whoThe material originally presented at were interested in further details.AEMA\'sFirstAnnualMeetingin RobertMoore,President,ArmmWashington,D.C.,inJanuary,1974, Consultants, described a new techniquewasacclaimed as being the definitive ofdetectingmoisturewithinthework on the subject. built-uproofmembranethroughBecauseofthepaper\'svalueasa special aerial photosofagivenarea.how-to-do-it guide, AEMA has reissued Members of the audience after viewingit as a permanent 88-page booklet that amovieshowingacrewinaction,includescharts,photographs. expressed agreatdealofinterestinCopies ofthebookletareavailable the high level of technology involved infor $5.00,including postage, from the theprocedure,questioningCurtisatAsphaltEmulsionManufacturersAsgreat length afterthesession.sociation, 1000 Vermont Avenue, N.W., It was a great conference, and as oneWashington, D.C. 20005. LI FTI NGmade easy with .c;)n nr;i Q (.)L!JUt.r\'CONVEYORS "E-ZLIFTS"carry alltypesofmaterials . concrete,tile,bricks,shingles, insulation, gravel, sand, packaged and rolled materials, etc. *LIGHTWEIGHT* HIGHLY L manufactured byMACHINERYDEVELOPMENT, INC.,Denver, Colorado office - 1545 Glenarm Place 80202 . plant - 2000 S. Cherokee S1reet 80223 18ABC, OCT. 1974'