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Hydrothermal Vein Sequences and Alteration of the Central Maratoto Valley, Coromandel Peninsula, New Zealand
By P Grieve, J L. Mauk
The Central Maratoto Valley in the Coromandel Peninsula contains a sequence of veins in pervasively altered dacite + andesites of the Waipupu Formation. We recognise at least eight different vein type
Jan 1, 1999
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The Victoria Gold Deposit in the Mankayan Mineral District, Luzon, Philippines
By A G. Cuison, B V. Andam
Three well-known copper and gold deposits in northern Luzon, Philippines are located in the Mankayan Mineral District. These are the Lepanto Copper-Gold Deposit, the Far Southeast Porphyry Copper Depo
Jan 1, 1999
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A Geo-Mechanical Assessment of Thick Seam Mining Methods with Regard to Their Application to Australian Black Coals
By C D. Rawlings
An assessment is made of the potential for thick seam underground mining of black coal in Australia. A brief summary is given of the geo-mechanical environment and previous mining history existing in
Jan 1, 1980
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The use of mid-panel ventilation shafts to improve positional cooling efficiency in a Bowen Basin longwall mine – a case study
By D Brouwer, P Wild, B Belle
Due to the steep geo-thermal gradient in Bowen Basin area, as underground coalmines reach increased depths of extraction, the Bulk Air Cooling (BAC) requirements will increase as opposed to cooling th
Aug 28, 2017
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Remediation Strategies for Acid Mine Drainage at Sullivan Mine, West Coast, New Zealand
By K Gordon, A Black
Two remediation strategies have been considered to reduce the levels of acidity and dissolved metals in acid mine drainage discharging from Sullivan Mine, West Coast, New Zealand. The oxidising strate
Jan 1, 2003
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Auxiliary ventilation design – why and how mines waste so much power on inferior systems
By D J. Brake
There has been a strong trend over the past decade in hard rock mines towards the use of very high powered auxiliary (or secondary) fans; in many mines, the installed power for the secondary ventilati
Aug 28, 2017
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Production Capacity Optimisation in the Presence of Grade Uncertainty
Grade uncertainty can have a number of important implications for a mining operation. One of the most significant risks in not considering grade uncertainty in planning is the over or under allocation
Dec 6, 2010
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Oxygen Isotope Zonation at the Golden Cross Low-Sulfidation Epithermal Gold Deposit, New Zealand
By M P. Simpson
Forty one whole rock samples from the Gold Cross low-sulfidation epithermal Au-Ag deposit have d18O values that range from 4.4 to 9.3 per mil, with an average value of 7.0 per mil. Unaltered and weakl
Jan 1, 2001
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Grade Control: How Much Money Do You Want to Lose?
Grade control is a real challenge, and better sampling and modelling practices are among the tools that have proven efficient in improving it. Although based on rather trivial examples, this paper add
Jan 1, 1999
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The Use of Novel Approaches to Separate Heavy Minerals from AlbertaÆs Oil Sands
By J Coward, S Bulatovic
There are currently two operators producing oil from the surface-mineable portions of AlbertaÆs oil sands (Syncrude Canada Ltd and Suncor Inc) and two other companies are proposing to enter the indust
Jan 1, 2001
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The Measurement of Blast Induced Vibrations in Soil
By G C. Sen
All mining and quarrying operations that employ blasting to fragment and move broken ground have a price to pay for æby-productsÆ such as vibration and noise. These æby-productsÆ cannot be eliminated
Jan 1, 1999
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Path Planning and Position Control for Autonomous Loading Operation by Wheel Loader
Authors have been conducting research on autonomous loading operation by wheel loader. Autonomous loading cycles has been demonstrated with real size experimental model. In V shape loading operation,
Dec 6, 2010
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Reducing total project cost in the study phase using zero base design
By J Merrells
Fluor, together with our clients, has yielded significant reductions in the total cost of mining projects by employing a systematic and methodical process of cost reduction. This paper outlines this s
Jul 24, 2017
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Technologies for Sustainable Operations
By J Temos
This paper outlines a number of immediate practical approaches to continuous improvement in environmental management in the minerals industry. It puts these into context with longer time-frame step-ch
Jan 1, 2002
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An overview of ventilation and gas management systems in an underground coalmine in Iran
By S M. Aminossadati, R Bagherpour, F Hasheminasab
Mine ventilation is an essential part of underground mining operations used to provide fresh and cool air, as well as to dilute and remove contaminants from the work environment. This paper presents a
Aug 28, 2017
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Smelting Alternatives for New Zealand Titaniferous Minerals
By C E. Davies
At present the source of virgin iron for steel produced in New Zealand is titanomagnetite extracted from titaniferous beachsands. Some of these beachsand deposits contain extractable quantities of ilm
Jan 1, 1980
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Coal Ash Disposal at Rotowaro Minesite: A Reference Condition Approach to Setting Boron Criteria and Assessing Environmental Effects
By S Speed, N Corlis, A Goldstone, G N. Browne, M Fitzpatrick
In 2005, Solid Energy New Zealand Limited obtained non-notified consent for the disposal of 1Mt of coal ash at the Rotowaro minesite, forming part of a coal supply agreement with the Huntly Power Stat
Jan 1, 2006
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How to Manage Machine Duty to Sustain High Production Rates
By P Meehan, R McAree, Z Guan
Equipment maintenance is 30 - 50 per cent of the operating costs for a typical mining company. While this is substantial, its importance is beyond its significance as a cost heading. Modern mining req
Jan 1, 2002
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Development of Grindability Tests Based on Direct Measurement of Energy
Development of Grindability Tests Based on Direct Measurement of Energy Nowadays, for the characterisation of the grindability different grindability indices - Bond-work index (Wi), Hardgrove Grindab
Sep 13, 2010