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4ThereareimportantportusesrelatedtodrybulkthatneedtocontinueatGlebeIslandOverrecentdecadestheworkingporthasmovedfromSydneyHarbourtoBotanyBay.Thisisaresultofchangestothesizeofshipsandtothemethodoftransporx1cnggoods.ThemanyfracturedportsitesaroundSydneyHarbourwereinexfcientintermsoftheirsizeandtheirconnecx1constothetransportsystem.ForSydneytocompetewithMelbourneandBrisbanealargecontainerandwetbulkterminalwasbuiltinBotanyBay.Wellover90oftheSydneyportacvitynowoccursatPortBotanyandthishasreleasedlandfornewdevelopmentslikeBarangarooandadapvereuseslikeWalshBay.SydneyHarbourissllthedesnaonforthegrowingcruiseshipindustryanumberofoiltankersandfordrybulk.Currentlydrybulkrepresentsabout2.5ofthetotalportusage.Thisismainlythroughsaltsugarbothverysmallgypsumandcement.ThesearedockednearthesilosandgenerallyconveyedintoasilobeforebeingtransportedacrossSydney.Thebigchangethatispredictedisforaggregates.AggregatesupplyforSydneyThebiggestfuturesupplyappearstobeforaggregatewhichincludessandandgravel.CurrentsuppliesatKurnellandPenrithLakesarerunninglow.PrediconshavebeenmadethatallofSydneyx19ssandandgravelaggregatewillneedtobeshippedinthroughGlebeIslandtosupplythecityx19sbuildingindustry.Alileresearchhoweverindicatesthatthereareothersoluons.A2006newsreleaseindicatedthataquarryatMarulancouldproduce5milliontonnesofaggregateformorethan90years.Thiswouldbesux16cientforSydneyx19sneedsforlargeaggregate.ForsandacompanycalledSydneyMarineSandisproposingtoextractsandfromtheoceanasoccursinmanyEuropeancountries.Themarinesandwouldbeox17oadedevery3daysforaperiodof3hours.EvenifthiswasdoubleditwouldseemthatthecurrentfaciliesandsilosatGlebeIslandcouldhandletheload.CementThereareproposalstorelocatesomeofthecementbatchingplantsfromBlackwaleBaywhichwillincreasetheamountofcementcomingintoGlebeIsland.GypsumandSaltThetonnageofthesebulkmaterialsisrelavelysmallbutinteresnglymuchofthegypsumisshippedfromGlebeIslandtoBotanyBayasisallthesalt.ConclusionEvenwiththeancipatedincreaseinaggregatesupplyfromtheseaitwouldseemthatthereisconsiderablecapacityintheexisngsilosandadequatewharfareaadjacenttomaintainthedrybulkportintheportareabetweenthesilosandtheWhiteBayPowerstaon.Keepingtheportwhilerealisingassetsfordevelopment.PostuselandLandfordevelopmentoradapx1cvereuse