Deep Well turbine pumps receive constantly increasing application to the problem of mining water and other fluids from great depths. Many installations of medium settings
Table of ContentsThe ProcessReactions InvolvedSide ReactionsThe Scope and Results of the InvestigationFactors Influencing Segregation and Flotation of CopperTime and TemperatureMoistureCoke Particle SizeType of Reducing AgentSize
The equipment for the separation of the rare earths consists of nearly 200 columns thirty inches in diameter by twenty feet high. They are constructed
Table of ContentsBasic ConceptsExperiments With Drop TesterDiscussion of Test Results The past 15 years have seen rapid advances in the metallurgy of materials for drill
Table of ContentsMaterials and Experimental WorkAnalytical ProcedureResults and Conclusions Subsequent to the work of A. Vita in 1920, a number of investigators have published data
In 1955, the Ideal Cement Company decided to increase the production at its Ada, Oklahoma operations. After many studies it was decided to build a
Table of ContentsAbrasion TestSoundnessShape of ParticleGradationDeleterious Substances The largest use of aggregates is for highway construction. Furthermore, the majority of sales for other than highway
Commonly accepted maintenance methods are being outdated by the rapid acceptance and use of more complicated hydraulic circuitry on modern mining equipment. It is no
While coal production over the past 25 or 30 years has been on a horizontal plane, coal’s share of the total energy market has declined.
The tensile strength of rock is its weakest property, and this property apparently enters into all failure phenomena, whether underground or on the slope of
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