Modern Quarrying October-November 2015

QUARRYING MODERN

CONTENTS

14

20

26 Gold mine tailings for

KPAs in the southern African surface mining environment

Aspasa speaks with a strong voice on sustainability

brickmaking – is this viable?

Aspasa has extended an invitation to the Global Aggregates Information Network (GAIN), to hold its prestigious meeting in Cape Town in April next year, and to link up with the Institute of Quarrying/Aspasa annual conference. GAIN is an informal network for sharing information between aggregate associations across the globe for the general good of the industry. 34 Cat mini excavator raises the bar 35 Weir’s customised crushing solution 37 VSD technology improves energy savings 39 Joest Kwatani’s turnkey offer MARKET PLACE

The research in this paper by Dr André Dougall, has identified that five key per- formance areas, namely safety and health, costs, product quality, fleet management, and delivery, should form the basis of any performance monitoring and measure- ment system on a mining operation. The author says a valuable tool to monitor and measure performance is the use of KPAs.

A laboratory-scale study aimed at utilis- ing Witwatersrand gold mine tailings in making bricks has shown that the chemical composition of these tailings is similar to that of the clay material used for commer- cial brickmaking. The authors believe that there is a significant need to develop new long-term uses for mine tailings.

AROUND THE INDUSTRY

40 BLAST FROM THE PAST

4 Flat market conditions for a while 7 AfriSam increases EC cement base 8 Atlas Copco relocates CT branch 9 Smarter energy grid required

ON THE COVER VER

MODERN

Published quarterly by: Crown Publications cc P O Box 140 Bedfordview, 2008 Tel: +27 11 622 4770 Fax: +27 11 615 6108 www.crown.co.za

Editor Dale Kelly

QUARRYING OCTOBER -NOVEMBER2015 www.crown.co.za

JSE-listed company Afrimat has extended its reach into Mozambique, supporting the rapidly developing region with high quality aggregate products for civil and mining projects, as well as drilling and blasting services. It has established quarries in Pemba and Cuamba in the northern region with another quarry planned for Palma. Front cover photograph shows the feeding bin and plant at Pemba quarry in northern Mozambique. See story on page 10.

dalek@crown.co.za Mobile: 0834199162 Advertising Bennie Venter benniev@crown.co.za

Design & layout Adèl JvR Bothma

Average circulation 2 521 Printed by: Tandym Cape

Circulation Karen Smith Publisher Karen Grant

www.modernquarryingmagazine.co.za

Goldmine tailings forbrickmaking Afrimat–buildingstrengthbeyondborders ImpressiveGAINgatheringplanned forCapeTown

The views expressed in this publication are not necessarily those of the editor or the publisher.

INTHIS ISSUE

1

MODERN QUARRYING

October - November 2015