Table of ContentsSilver RefiningHow to Refine Silver with ElectrolysisSilver Refining EquipmentOperation and ProductsGold RefiningRefining Gold with ElectricityGold Refining EquipmentOperations and ProductsCopper RefiningProcess for the Electrolytic Refining
Although three rather extensive researches on the system gold-mercury have been published within the last ten years, the disagreement in the various results is most
It appears from all tests run to date that under otherwise constant conditions, increasing the concentration of a given collector increases R and decreases K
Table of ContentsLoading the HeapPregnant Solution PondsPlant OperationTypical Operating Data Leach Pad Construction: After the site of this Silver Heap Leaching pad was prepared, a pad base
Table of ContentsModern Alpine TunnelsThe Simplon TunnelPowerVentilationRock-TemperatureIlluminationDrainageTransportationMethod of ConstructionDrillingExplosivesMuckingGeological ConditionsRate of ProgressThe Loetschberg tunnelGeological ConditionsRock-TemperatureRate of ProgressPowerTransportationLightingDrainageThe Drill-CarriageExplosivesExcavationVentilationRock Temperature It is now generally admitted by
Ammonite is an iridescent gem formed within an ancient marine fossil for which it was named—ammonite. Originally discovered by the Blackfoot Indians, ammolite is mined only in
Table of ContentsPreparation of Samples & Chemical AnalysesReducing-Power of the OreAssay of Dead-Roasted Silver OreDead-Roasted Silver ConcentratesAcidic SlagsBasic SlagsUse of Borax in ExcessNormal Charge for Coppery OreEffects
Owing to two large falls of ground which resulted in serious accidents occurring towards the end of 1908, it became evident that the “open chamber”
Table of ContentsTin GeologyOccurrence of Tin in DriftsPreliminary Examination and Engineering ConsiderationsTin Deposit ValuationEstimating Tin ReservesEstimating Value of the Tin DriftComparative Accuracy of the Different MethodsTin Mining begin
Table of ContentsEquipmentChemical Reagents, and SuppliesPracticable Substitutes in the FieldGold and Silver AssayCopper and Lead Assays For years past I have traveled in quest of promising mining- properties, over
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