Table of ContentsRadialax System of Tunnel DrivingProctor Tunneling MachineThe Karns MachineThe Sigafoos MachineThe Fowler MachineThe Bennett Machine If we could keep the rock-drills running all
A Graphic solution of Kutter’s formula for the flow of water has been worked out by Dr. L. I. Hewes in connection with his course
Table of ContentsAmerican Tunneling RecordsEuropean Tunneling RecordsTunneling Machines This paper deals specifically with heading-driving as distinguished from the broader term tunnel-driving. A heading is a
Table of ContentsComposition of Saline WatersSolubility of ComponentsTime-Element in Water-ConcentrationsEffect of TemperatureEffect of PressureBoraciferous Formations Since the borates which supply commerce with most of the
Table of ContentsTypes of Grinding Mill ManufacturedROD MILLSPEBBLE MILLSSelecting Wet or Dry Grinding MillHow much grinding power is neededSAG Mill vs Ball MillMill speed and grinding charge
Table of ContentsWhere are Borax Ore DepositsGeologic Occurrence of BoraxOriginal SourcesSolfataric BoraxLacustrine BoraxMarsh BoraxTerrenal BoraxGeology of the Death Valley Borate-RegionSurface-ReliefGeologic FormationsGeotectonicsGeology of the Borate-Beds of Furnace CanyonGeneral
In many of the old placer-mining districts are still to be found large tracts of gold-bearing gravel not suitable to be worked with a dredge,
After the completion, of the Hammond Mineral Assay & Testing Laboratory of the Sheffield Scientific School, Yale University, it became necessary to secure and assay
Table of ContentsCone Crusher SPIDER CAPTOP SHELL AND SPIDERCone Crusher MAINSHAFTHEAD CENTERCone Crusher STEP BEARINGCone Crusher MANTLECone Crusher CONCAVE RINGCone Crusher DUST SEALCone Crusher Eccentric, Gears,
Table of ContentsAmalgamating PanOperating an Amalgamation PlantSummary of Amalgamation TestsConclusion The aim of instruction in a metallurgical laboratory is to make real the principles on which metallurgical
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