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Rate Of Consumption Of Dissolved Oxygen During Ammonium Carbonate In Situ Leaching Of UraniumBy J. B. Goddard
Abstract. Leaching of, uranium in situ from sandstone deposits with ammonium carbonate solution containing: dissolved oxygen occurs rapidly compared with the leaching of the bulk of the sulfur present
Jan 1, 1980
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Emerging Data Processing Technologies for TBM Projects— State of the Art and Outlook - RETC2021By Ulrich Maidl, Jamal Rostami, Ulf Gwildis
Tunnel Boring Machines (TBM) have more or less become the preferred method of tunneling in various ground conditions and Programmable Logic Controllers (PLC) or microprocessors are standard features o
Jun 13, 2021
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Reagent Conditioning For Improved Flotation SelectivityBy C. E. Jordan
The Bureau of Mines has investigated the fundamentals of fatty acid/fuel oil conditioning for improved flotation selectivity. Both conditioning time and intensity can provide optimum flotation selecti
Jan 1, 1995
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Treatment Of Mine Drainage Using A Passive Biological System: Design Of And Preliminary Results From A Full-Scale SystemBy K. Whiting
In October 1993, the first two of a series of full scale passive biological treatment cells were constructed to treat mine drainage from the Burleigh Mine (located approximately 48 km west of Denver,
Jan 1, 1994
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Electrochemical Characterization Of Bioleaching Of Cadmium SulfideBy F. A. Schinner
The present study has investigated the leachability of cadmium sulfide minerals by Thiobacillus ferrooxidans and the electrochemical reactions involved in the process. Using a cyclic voltammetric tech
Jan 1, 1993
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Wabush Mines ? Stockpiling and Outloading FacilitiesBy Clyde M. Pearce
This paper describes the facilities at Pointe Noire, Quebec that Wabush Mines utilizes for the receipt, distribution, stockpiling and shipping of iron ore concentrate and pellets. The main topics to b
Jan 1, 1967
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Porosity Of Iron Ore PelletsBy Eugene W. Price
One of the most important fundamental characteristics of iron ore pellets is their porosity. This importance arises from the fact that the pores are the busy avenues whereby many changes are brought a
Jan 1, 1967
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Theory Of Sequential Pond SystemsBy David Butts
Solar ponding to crystdlize sodium chloride has been used for thousands of years.1 The systems used were inefficient and usually small compared to the large 25,000 acre pond areas seen today. It has o
Jan 1, 1984
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In Situ Determination Of Methane Gas In Utah Coal Mines (A Case History)By V. J. Hucka
Coal, which was discovered in Utah in 1849, covers about 18% of the total area. Production in 1981 vas more than 14 million tons. However, some Utah coal mines are quite gassy. If longwall face techno
Jan 1, 1983
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Sodium Bentonite From Western Nevada (77a1b110-00de-42ff-9619-af0b7766c588)By J. L. Post
A large body of readily available Na-montmorillonite is present about 24km (15 miles) east of Fallon, Nevada. The clay is comparable to Wyoming Na-bentonite, but with somewhat less MgO and somewhat mo
Jan 1, 1996
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New Engine For Ultra-Class Trucks; Cummins Unveils Its 3,728 Kw (4,000 Hp) PlatformIn its largest product launch in company history, Cummins Engines welcomed more than 200 customers, vendors and media to witness the unveiling of its new QSK95 engine at its Seymour Engine Plant in Se
Jan 1, 2012
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Thematic Strategy On The Sustainable Use Of Natural ResourcesBy W. Bosmans
The European Commission published its Communication of the Thematic Strategy on the sustainable use of natural resources ("Resource Strategy") on 21 December 2005. The Resource Strategy aims at reduci
Jan 1, 2007
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Support Capacity And Roof Behavior At Longwall Faces With Shield Supports--Summary Report ? IntroductionBy S. S. Peng
Hydraulic powered supports have been employed in the U. S. longwall mining for the last two' decades. Yet the sciences of roof control at the powered supported faces remain largely unknown. Many
Jan 1, 1986
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The Use Of Mobile Crushers In The Minerals IndustryBy H. G. Kok
The concept of mobile crushers is not new. Since their introduction about twenty-five years ago, mobile crushers have continued to gain widespread attention. Mobile crushers reduce minerals in the ope
Jan 1, 1980
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Front-End Loaders As Primary Loading UnitsBy W. A. Haley
Wheel loaders were first introduced shortly after World War II as small machines designed for handling loose materials in various industrial and processing applications. It was not until the early 195
Jan 1, 1967
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Thoughts on the Responsibility of Geotechnical Engineers and Hydrogeologists in MiningBy R. J. Sheets
"What is the primary responsibility of geo-engineers in mining? Early in my career, I was asked this question by an experienced engineer. After explaining some various tasks, I was informed that the m
Jan 9, 2018
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Geologic Structural Analysis For Open Pit Slope Design, Kimbley Pit, Ely, NevadaBy Perry N. Halstead
The primary objective of the structural geology portion of the Kennecott Copper Corporation-U. S. Bureau of Mines Pit Slope Stability Study was to determine the attitude, geometry, and spatial distrib
Jan 1, 1968
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Estimation Of Model Parameters For Liberation And Size Reduction (de0f962a-a1d7-457f-8f47-7eb580e50c1d)By W. Z. Choi
In our previous work, a population balance model describing the simultaneous processes of size reduction and mineral liberation has been developed. The experimental verification of this model, however
Jan 1, 1987
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Development Of Sherritt's Commercial Nickel Refining Process For Low And High Iron LateritesBy D. Robert Weir, Verner B. Sefton
The reduction roast-ammonium carbonate leach-hydrogen reduction process for laterites has been under development by Sherritt Gordon for the past 20 years. The process can treat high iron or low iron l
Jan 1, 1979
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Coal Cleaning Test Facility Research And Development At A Demonstration ScaleBy D. N. Trerice
The Electric Power Research Institute (EPRI) is sponsoring the construction and operation of a coal cleaning test facility at Homer City, Pennsylvania. The facility represents a major investment by th
Jan 1, 1981