Table of ContentsExperimental Procedures and ResultsExtraction by ChlorinationEquipmentProcedure and ResultsSeparation of Tantalum and ColumbiumEquipmentProcedure and ResultsPurification of Rare-Earth ProductProcedure and Results for Small-Scale TestsEquipmentProcedure and
Table of ContentsIntroduction to Electrowinning MolybdenumElectrowinning Molybdenum Experimental ProcedureCharacter of Metal DepositedElectrolyte CompositionAlkali Phosphate ElectrolyteAlkali Phosphate Borate ElectrolyteSodium Tetraborate ElectrolyteEffect of Temperature on Current Efficiency
Table of ContentsThe OreMethods of ExplorationDevelopment and MiningGeneral DevelopmentDevelopment DetailsStopingUnderground TransportationAuxiliary OperationsProductionVentilationMine DrainageFire PreventionSafety Methods And First-Aid OrganizationSummary of Costs The principal ore deposits occur
Table of ContentsDescription of FlocculantsFiltration with Test-Leaf ApparatusDescription of Apparatus and Test ProcedureTests With Crow’s Nest Pass SlurryTests With Roslyn-Cascade SlurryTests With Black Diamond SlurryExperiments
Table of ContentsDescription of DepositsMining MethodsQuarrying – GeneralOperations of Individual PropertiesUnited States Gypsum Co.GeneralExplorationDevelopment and MiningBestwall Gypsum Co.GeneralExplorationDevelopment and MiningNational Gypsum Co.GeneralExplorationDevelopment and Mining Gypsum
Table of ContentsTheoretical CalculationsEvaluation of TermsSample CalculationExperimental InvestigationsK Spectral Lines for Lower Atomic Number ElementsK and L Intensities From the Same ElementL and M Intensities
Table of ContentsDescription of ProcessExperimental Procedure and ResultsCerium SeparationPreparation of Rare-Earth HydroxidesOxidation of Cerium to TetravalencyAcid Leaching of Trivalent Rare-Earth Elements From Hydrous Ceric OxideRefining
Table of ContentsAnalytical ApparatusSelection of Analytical Line PairsChoice of Internal Standard and Stabilization BufferAnalytical ProcedureExcitation ParametersEmulsion Development and CalibrationStandard and Sample PreparationPreparation of Working Curves
Table of ContentsExperimental ProcedureResults and DiscussionResin Crosslinkage and Eluant Flow RateResin-Bed ShapeSeparating IonsConclusions Bastnasite rare earths are now being utilized to a limited extent as
Table of ContentsPurpose of Mine ShaftGeology and Physical Characteristics of RocksShaft SiteShaft SinkingPreparationShaft-Sinking PeriodDrillingBlastingMuckingTimberingPumping1050-Level StationSupervision and LaborSafetyCosts and Performance DataShaft Sinking EQUIPMENTHistoryGeologyMining MethodsUndercuttingDrillingBlastingMuckingShuttle-Car TransportationConveyor TransportationTransportation
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