Search Documents
Search Again
Search Again
Refine Search
Refine Search
- Relevance
- Most Recent
- Alphabetically
Sort by
- Relevance
- Most Recent
- Alphabetically
-
Assessment of mass modulus of a weathered argillaceous rock
By Chris M. Haberfield, Neil D. Benson
The assessment of overall modulus (or stiffness) of a fractured weak to moderately strong rock mass is a key parameter in the design of civil engineering works in these materials. It also provides th
Jan 1, 2003
-
The Use Of Neural Network Analysis Of Diagnostic Leaching Data In Gold Liberation Modelling
By K. R. P. Petersen
Paper written on project work carried out in partial fulfilment of M.Sc. Eng.(Metallurgical Engineering) degree The interrelationship between mineral liberation and leaching behaviour of a gold ore
Jan 1, 2003
-
In-Service Monitoring Of Water Barrier Project At South Deep Gold Mine
By L. J. Olivier
The possible closure and subsequent flooding of South Deep Gold Mine?s (SD) neighbouring Randfontein Estates Limited No. 4 Shaft (REL 4) necessitated the construction of five concrete plugs in the con
Jan 1, 2006
-
Composite Failure Mechanisms In Coal Measures? Rock Masses - Myths And Reality
By J. V. Simmons
Composite rock mass failures involve intact rock material as well as fracture and shear on existing defects. Experiences from open-cut coalmining in the Bowen Basin of central Queensland are that fail
Jan 1, 2006
-
The business benefits of an advanced mineral sands control application
By R. Hope, C. van Heerden
In any process or organization inefficiencies are costly. In times of abundance this reality often does not receive much attention. During such times the focus is rather on increasing capacity to incr
Jan 1, 2003
-
Flotation Of A Copper Sulphide Ore From Okiep Using Thiol Collectors And Their Mixtures
By G. Hangone
Paper written on project work carried out in partial fulfilment of MSc thesis This paper investigates the effects of thiol collectors: xanthates, dithiophosphates, dithiocarbamates and mixtures of
Jan 1, 2005
-
Some Aspects On Selective Dispersion Of Fine Particles With Special Emphasis On Egyptian Ground Calcium Carbonate
By F. H. Abd EL-Rahiem
A selective dispersion process is presented and the work carried out to find optimum process conditions to minimise the colouring material in ground calcium carbonate (GCC) is described. The feed mate
Jan 1, 2004
-
Simulation In Mineral Processing History, Present Status And Possibilities
By A. J. Lynch
Mineral processing models have been discussed for many years but it was not until digital computers became available about 1960 that serious attempts at circuit simulation could be carried out. Even t
Jan 1, 1999
-
History Of The Development And Deployment Of The Parallel Sided Mortar Intrusion Concrete Watertight Bulkhead In Underground Mines
By A. A. B. Douglas
In this paper the origins of the mortar intruded concrete concept and its development and application in the construction of watertight bulkheads in South Africa are described. The events leading to
Jan 1, 2006
-
An Agglomerate Scale Model For The Heap Bioleaching Of Chalcocite
By N. Ogbonna
A mathematical model for bioleaching at the agglomerate scale is developed. The agglomerate is defined as a unit volume of a heap which contains a solid phase (a size distribution of ore particles), a
Jan 1, 2006
-
Strain-softening behaviour of a schistose rock under triaxial loading
By A. Varadarajan, M. Hashemi, K. G. Sharma
Quartz mica schist collected from Nathpa-Jhakri Hydropower Project, Himachal Pradesh, North India is tested under triaxial loading using a servo-controlled loading system. Complete stress-strain-volu
Jan 1, 2003
-
Interaction Between The Block Cave And The Pit Slopes At Palabora Mine (9bc522bc-fe6d-493d-b039-b6a950e034a4)
By A. Moss
The Palabora Mining Company has successfully extended the life of its operation by developing a 30 000 tpd block cave underground mine below the now closed open pit. The process of transitioning from
Jan 1, 2006
-
An Investigation Of Impact Breakage Of Rocks Using The Split Hopkinson Pressure Bar
By L. Bbosa
Paper written on project work carried out in partial fulfilment of BSc (Hons) (Eng) (Mechanical) degree Discrete element methods (DEM) are being used to provide detailed impact histories of the par
Jan 1, 2006
-
How Do Bacteria Interact With Minerals?
Sulphide minerals, such as pyrite and sphalerite, are leached by ferric sulphate. This reaction produces ferrous sulphate and other dissolved products. The ferrous sulphate is re-oxidized to ferric su
Jan 1, 2000
-
Nitrogen Solubility In Molten CaO-SiO2 Slags
By H. G. Oltmann
The equilibrium nitrogen solubility in the CaO-SiO2system was studied by a slag-gas equilibration technique, in graphite crucibles at 1823K under a CO-N2 atmosphere. The nitrogen content of the slags
Jan 1, 1999
-
Applications Of Fibre-Reinforced Shotcrete (Fibrecrete) Support In Difts At Nchanga Underground Mine
By S. Mundike
A scraper-based block cave method has been successfully applied to extract the Lower orebody at Nchanga since the 1950s. Since inception, scraper drifts and service ways have been supported using stee
Jan 1, 2005
-
Quantifying The Differences In Hangingwall Conditions
By M. Grodner
Underground excavations exhibit different hangingwall conditions in response to varying geotechnical and mining situations. These differences need to be quantified so as to accurately determine the ef
Jan 1, 2000
-
Risks Associated With Rockpasses In Deep-Level Tabular Mines Based On Historical Pass Performance
By W. C. Joughin
Problems with the stability and performance of rockpasses in deep-level mines are common. This paper presents the results of an investigation into the recorded performance of rockpasses in deep-level
Jan 1, 2005
-
Environmental Risk Assessment As The Basis For Mine Closure At Iscor Mining
By S. J. Swart
This paper discusses the principles and application of risk assessment and management as the basis for environmental management within the mining industry. Unlike in other industries, mines are requir
Jan 1, 1998
-
The Use Of Commercial Oxygen Probes During The Production Of High Titania Slags
By J. M. A. Geldenhuis
This work is concerned with studying possible reactions in the ilmenite furnace which may control the product quality of both slag and metal. Two different approaches were followed: comparing actual f
Jan 1, 1999