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Cyanidation Studies: Recovery Of Copper By CyanidationBy George O. Lower
The use of cyanides in the extraction of gold and silver is well known.1 Such extractions employ con¬centrations of cyanide in the range of 0.02-0.25 % sodium cyanide equivalent in leaching cycles of
Jan 1, 1966
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Predicting The Effect Of Physical Conditions On Productivity In Underground Coal MinesBy S. C. Suboleski
In a high risk venture such as mining where capital is committed and contracts are signed on the minimum of information, decisions are based primarily on production forecasts derived through considera
Jan 1, 1980
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Unconventional Resources Of Strategic Metals - General RemarksBy B. F. Dickerson
STRATEGIC METALS! Recently, this money accented cry has been heard in such diverse locales as Mining company boardrooms, Banker's offices, Stockbroker's quarters, Swindler's dens and Co
Jan 1, 1981
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Economic And Political Climate Of The Potash IndustryBy Rodger C. Smith
The topic chat has been assigned to me ?Economic and Political Climate of the Potash Industry? is a function of two basic facts: 1. Potassium is absolutely essential to plant and animal growth.
Jan 1, 1983
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Economic Aspects Of Postmining Land Use PlanningBy R. J. Sweigard
The effects of postmining land use planning are addressed in this paper. These effects may include savings in reclamation costs and increased value of reclaimed land. However, this may result in great
Jan 1, 1985
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Kaolin Project In The Amazonia Area ? BrazilBy Haydn H. Murray
In 1967 a large kaolin deposit was discovered on the Jari River, a tributary of the Amazon, in the territory of Amapa in Brazil. The kaolin occurs in the Barreiras Series of Pliocene age and is part o
Jan 1, 1981
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Real World Improvement through Virtual Instrumentation at Oceanagold HaileBy Brett Schug, Caelen Anderson, Sohail Nazari, Carlos Cristoffanini
"The Haile gold mine in South Carolina is increasing the automation level of its processing plant in order to improve operational stability. One step toward this goal is the application of a digital t
Dec 1, 2018
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The Development Of A Thermal Mesophase In Bitumens From High Temperature Ore DepositsBy Andrew P. Gize
A petrographic approach to studying the organic matter in ore deposits is advantageous in that direct observation of sample heterogeneity can be made, organic constituents (macerals) can be identified
Jan 1, 2013
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Development, Application And Selection Of Vibrating Screens For Dewatering CoalBy Kenneth G. Colman
Even though wet processes were used in coal preparation plants prior to 1941, dewatering coal was not a problem then because the finer sizes were uneconomical to recover and were considered waste. How
Jan 1, 1970
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Mineral Wool Production From Coal-Ash - A Progress ReportBy William F. Lawrence
Research performed by the West Virginia University Coal Research Bureau under the sponsorship of the U. S. Bureau of Mines has demonstrated that coal-ash can be converted into mineral wool insulation
Jan 1, 1969
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Overview Of The Aggregate IndustryBy B. Weaver
Every year Pit & Quarry Magazine surveys the industry to produce their annual review. Here's a sampling of some of the statistics the survey produced from the end of the year 1994 survey.
Jan 1, 1995
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Successes And Failure Of VCR Mining At HomestakeBy J. C. Haptonstall
Stoping methods at the Homestake Gold Mine through 1978 had been traditional overhand cut-and-fill, shrinkage or square set. High costs, low-productivity and safety concerns prompted the mine to searc
Jan 1, 1986
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Surface Mining And The Forest EnvironmentBy Don Cchultz
The United States Forest Service, as a land managing agency, is responsible for the surface administration of National Forest lands. The basic objectives of management are protection and utilization o
Jan 1, 1971
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The Shortage Of Cement, Etc.By Roy A. Grancher
?The Horn of Plenty seems to have sprung a leak?.? anonymous For the first time in the Nation's peace-time history, shortages have become a way of life for the United States. Such words as sc
Jan 1, 1974
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Underground Mine Management SystemsBy James Wm. White
Today a large number of open pit mines use computer-based mine management systems to automatically assign haul trucks, track equipment, and manage information. Now advances in digital communications a
Jan 1, 1996
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Human-Systems Integration for the Safe Implementation of Automation "Mining, Metallurgy & Exploration (2020)"By Robin Burgess-Limerick
The introduction of automation to mining has great potential to reduce safety and health risks by removing people from hazardous situations. However, automation changes the tasks performed by people a
Jun 16, 2020
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Model Discrimination In The Flotation Of A Porphyry Copper Ore - IntroductionBy Edward C. Dowling
Froth flotation has been used industrially for many years to separate valuable minerals from their associated gangue constituents. Notwithstanding the significance of this process to the mineral indus
Jan 1, 1984
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Coal Market Study For The Eastern Interior Province To 2040 ? IntroductionBy Ronald F. Ayers
The study upon which this paper is based was completed by Battelle's Columbus Laboratories for the U.S. Army Corps of Engineers in 1974. It is but part of an overall effort by the Corps to evalua
Jan 1, 1976
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A Hierarchical Production Planning Approach To Work Unit Scheduling In The Coal IndustryBy E. L. Gillenwater
Coal mine planning has three distinct decision levels: (1) decisions made at the upper level of management that determine production requirements for specific mines, (2) decisions made at the middle m
Jan 1, 1995
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Rail Haulage SystemsBy Roger M. Buckeridge, Charles D. Reese, Silvio M. Martino, William T. Carey, Ansel H. Graham
FUNCTIONS OF RAIL HAULAGE SYSTEMS The principal application of rail haulage in under¬ground mining is in the movement of ore or coal pro¬duction from near the mining areas out to a processing plant
Jan 1, 1982