AfriRock 2017, 2–7 October 2017, Cape Town

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HAVE YOU BOOKED THE DATE IN YOUR DIARY TO ATTEND?

The Southern African Institute of Mining and Metallurgy (SAIMM) and the South African National Institute of Rock Engineering (SANIRE) is the hosting and organising body for the first African Regional Rock Mechanics Symposium to be held in Cape Town 2017.

Mining has traditionally been a mainstay of African economies, while Oil and Gas industries are rapidly growing throughout Africa. Infrastructure is being developed to support these industries. Rock engineering design is and therefore will continue to be essential for the growth of the continent.

The 2017 ISRM International Rock Mechanics Symposium is to be held in Cape Town with the theme  "Rock Mechanics for Africa".

Prior to the conference, the ISRM Board, Council and Commission meetings will take place and technical visits are being arranged for after the conference.

WHO SHOULD ATTEND
The conference will be of value to:
- Rock engineering practitioners
- Researchers
- Academics
- Mining engineers
- Civil engineers
- Petroleum engineers
- Engineering geologists.

 
EXHIBITION/SPONSORSHIP
Sponsorship opportunities are available. Companies wishing to sponsor or exhibit should contact the Conference Co-ordinator.

For further information on the event click HERE or contact:
Raymond van der Berg
Head of Conferencing
Tel: +27 11 834-1273/7
E-mail: raymond@saimm.co.za


SAIMM Journal - February 2016

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SAIMM Journal - February 2016
Contents

Journal Comment—Mining Business Optimization 2015
by M. Woodhall

President's Corner—Cooperative human social behaviour
by R.T. Jones

Obituary—Reflections on the life of Robbie Robinson
by R.D. Beck


Papers – Mining Business Optimization Conference

Post-pit optimization strategic alignment
by M.F. Breed and D. van Heerden

 
This paper describes and discusses the selection of an alternative cut-off grade as a strategic intervention. It involves changing the cut-off grade, and effectively increasing the head grade to gain a strategic advantage with a clear understanding of the financial value impact.

Impact of discount rates on cut-off grades for narrow tabular gold deposits
by C. Birch

 
The purpose of this study was to establish the impact of discount rates on cut-off grades for narrow, tabular gold deposits. A simple financial model was created that links the ore flow, block listing, and the cash flow, allowing the cut-off grade to be optimized considering how the cost -of -capital and chosen discount rate affect the cash flow. The results from the model were found to be comparable to the current cut-off grades obtained from the mine's proprietary optimizer program.

Business optimization for platinum mining projects and operations
by P.J. Petit

 
This paper describes a mining case study that applies business optimization as a methodology to optimize both short- and long-term targets. Business optimization
increased the NPV by 14.7% by challenging conventional decision-making associated with maximizing business value by including environmental externalities within the life of project

A simultaneous mining and mineral processing optimization and sustainability evaluation prepared during a platinum project prefeasibility study
by S.F. Burks

 
The case study consisted of a review of the prefeasibility study designs and cost estimates for a platinum group metal project in South Africa. Value chain optimization and sustainability studies were carried out simultaneously to identify potential value uplifts and guide the owner's team as it moves into the feasibility study phase of this project.

Application of manufacturing management and improvement methodologies in the southern African mining industry
by J.O. Claassen

 
A study was conducted on the business management and improvement methods used at 22 operating mines in southern Africa. It is argued that successful mining
business management and improvement depends on management's ability to effectively deal with mining industry-specific requirements, the integration of the geology- mining-plant system, and the implementation of systemic flow-based principles in all aspects of mining.

Monitoring ore loss and dilution for mine-to-mill integration in deep gold mines: a survey-based investigation
by L. Xingwana
The purpose of this study was to understand how ore loss and dilution affect the mine call factor with the aim of subsequently improving the quality of ore mined and the feed to the mill. A case study revealed that ore fragmentation, underground accumulation of ore, and dilution have a significant influence on the mine call factor and mine output

Papers Of General Interest

Anomaly enhancement in 2D electrical resistivity imaging method using a residual resistivity technique
by A. Amini and H. Ramazi

A study was carried out in a karstic area in western Iran to detect the location and geometry of probable cavities by conventional resistivity inversion and residual resistivity (RR)-based inversion. The results showed that the anomalous zones are better highlighted in the RR-based inversion images compared with the conventional inversion images.

Determination of mineral matter and elemental composition of individual macerals in coals from Highveld mines
by R.H. Matjie, Z. Li, C.R. Ward, J.R. Bunt, and C.A. Strydom

A number of conventional and advanced analytical techniques were integrated and cross-checked to provide a detailed characterization of coals from the Highveld coalfield in South Africa in order to better understand the mineralogical and chemical properties of the individual coal sources that are blended as feedstocks for combustion and carbon conversion processes.

Testing for heterogeneity in complex mining environments
by J.O. Claassen

A study performed at several operating mines suggests that the impact of heterogeneous or variable geological, mining, and plant processing environments on overall mining value chain performance may not be a key focus area at these operations. The findings reflect a high relative variability in the geological and processing environments and the mining operator's inability to effectively deal with the sources and consequences of variability. A focus on heterogeneity in complex mining operations may significantly enhance overall performance.

Stochastic simulation of the Fox kimberlitic diamond pipe, Ekati mine,
Northwest Territories, Canada

by L. Robles-Stefoni and R. Dimitrakopoulos

Two multiple-point simulation methods were tested for modelling the geology of a diamond pipe at the Ekati mine. The validation of the simulation results showed a reasonable reproduction of the geometry and data proportions for all the geological units considered.

Study of the pyrolysis kinetics of Datong coal using a sectioning method
by R. Du, K. Wu, X. Yuan, D. Xu, and C. Chao

A sectioning method was used to overcome certain shortcomings of the traditional methods used in studying the pyrolysis of coal. The temperature range was divided into three intervals, and three corresponding models of reaction established to study the different stages of the pyrolysis process.

Effect of crushing on near-gravity material distribution in different size fractions of an Indian non-coking coal
by S. Mohanta, B. Sahoo, I.D. Behera, and S. Pradhan

Two numerical indices, namely 'near gravity material index' and 'index of washability', are used to quantify the distribution of the near-gravity material in different density classes and to evaluate the degree of difficulty involved in the coal washing process.

Regards
Kelly Matthee
Journal & Subscriptions Co-Ordinator
Telephone: +27 11 834 1273
Facsimile: 086 585 2901
E-mail kelly@saimm.co.za



SAIMM List of Activities - Membership Meeting 18 March 2016

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Membership Activities March 2016


Dear Members

Attached is the list of activities displaying new elections and transfers considered by the Membership Committee in March 2016.

Please provide any feedback that you may have to Jacqui@saimm.co.za before the 15 April 2016.

Regards

The Membership Department 



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SAIMM: New Technology and Innovation Colloquium, 9-10 June 2016, Emperors Palace

 
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REGISTRATIONS ARE OPEN!

ABOUT THE COLLOQUIUM 
 
The South African minerals industry finds itself at a crossroad where current levels of productivity and safety, which are driven by current mining and processing methods, will no longer be either socially or economically acceptable. The future competitiveness of the Southern African minerals
industry depends on the application of appropriate and workable technologies, as well as innovative mining and processing methods, that improve safety and productivity. These will be based on process based organisations that are enabled and empowered by increasing levels of real time data and information integrated across the value chain.

This event is aimed at presenting examples of how technology can improve the costs and competiveness of the SA minerals industry, within the next 10 years and technology that is in use now. Not only will it draw on case studies and examples of technology development, but it will also explore innovative ways of applying state of the art technologies from other sectors, to the mining
environment.

 
WHO SHOULD ATTEND
  • Mine managers
  • Operational managers
  • Mine engineers
  • Mine planners
  • Geologists
  • Mining technical staff
  • Technical information specialists
  • Consultants
  • Contractors
  • Students
  • Academics
  • Researchers
  • Metallurgical Managers
  • Metallurgists
  • Process design engineers
SPONSORSHIP

The SAIMM and the organising committee would like to thank the following sponsors:

Cidra
Geobrugg
Minetec
New Concept Mining


Sponorship packages are still available.

For more information click here or contact:
Camielah Jardine
SAIMM, Conference Co-ordinator
Tel: 27 (11) 834-1273/7
Facsimile 27 (11) 838-5923
E-mail: camielah@saimm.co.za
Website: www.saimm.co.za


Your Horoscope for Monday, March 21

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Daily Outlook
Monday, March 21, 2016

The important thing now is to decide what you are going to do about "it", then to act when Aries Mercury clears a pathway over the next few weeks. The planet provides just the mental nudge you need. Possibilities dazzle when the Moon aspects Jupiter and Pluto tonight.

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