Associate Consultants

Alan Robertson

Director of Ausrocks

    Alan Robertson, Director of Ausrocks, has over 30 years of experience in the Mining, Quarrying and Tunnelling industries. In May 2006, Coffey Mining purchased TIP and Alan became a Principal Mining Engineer, consulting on open cut mining and quarry projects throughout Australia. In September 2008, he resigned from Coffey Mining and joined AVKO Mining, an Australian – owned underground and surface mining and civil contracting company as a Consultant, through his company, Ausrocks Pty Ltd (Ausrocks).

    In mid – 2009 Alan formed the AVKO Mining Quarry Consulting Group and on February 1st 2010 Ausrocks, by mutual agreement, took over the consulting arm of AVKO Mining which Ausrocks had developed.


    Rob Barnett

    Mining Geologist

      Rob Barnett is a Mining Geologist who, after an initial two year period in base metal, platinum and coal exploration has specialised in the industrial minerals field with experience in prospecting, mining, quality control, quality assurance systems, product research and development, and plant production. He has extensive hands on and managerial experience in all the mentioned fields with a total of 30 years plus experience in industrial minerals.

      Rob has also considerable experience in applying for both prospecting and mining rights in South Africa.He has also acted, together with associates, as an entrepreneur with prospecting rights in Mozambique and South Africa as well as a new stemming product for the mining industry. Rob has acted as a Competent Person for industrial mineral projects. He has been the responsible person for designing and implementing ISO 2000 quality assurance systems at an industrial mineral mine and at a milling plant. Rob has also conducted market studies as well a mineral project valuations for a range of industrial minerals as well as for a micronising mill project. He has also, during the past eight years, had experience in the mineral, chemical and specialist metal salvaging and recycling business.

      Rob qualified in BSc Eng Mining Geology (Wits RSA), has an MSc in Industrial Mineralogy (Hull UK), and a National Higher Diploma in Quality Assurance (Pretoria Technikon). His industrial mineral experience includes graphite, bentonite, limestone, magnesite, vermiculite, silica, feldspar, talc, ceramic clays, and sands and aggregates.


      Murray Lines

      Stratum Resources Mineral Consultancy

        Murray Lines, with a background in geology and market research, is the founding director of Stratum Resources Mineral Consultancy, an independent minerals consultancy providing information, supply-demand analysis and advice on policy developments for the mining industry.

        Mr Lines has had more than 25 years experience in industrial minerals and been responsible for conducting feasibility studies and providing consultancy services on various minerals and metals such as: mineral sands, titanium oxide, specialty silicas & quartz, paper raw materials, and other minerals and mineral operations throughout Australia and Asia. He has had extensive experience with kaolin, magnesia, bentonite, silica, pozzolanics, talc, zinc oxide, titanium dioxide, silica fume, and magnetite among others. Mr. Lines has also had experience in conducting supply-demand analysis for a wide range of feasibility studies and due diligence reports particularly for silica sand, zircon/rutile/ilmenite, kaolin, lime as well as many other minerals and metals across the Asian region.


        Laurence Matthews

        Head of Technical Services

          Laurence Matthews qualified with a BSc(Hons) degree (Rhodes RSA) in the early 1970’s and is a Registered Natural Scientist. He became a Member of the Institution of Quarrying (MIQ) in 1976, and Member of the Institution of Mining and Geology(UK) and a Chartered Engineer (MIMM.C.Eng) in 1979, and a Member of the Production Management Institute of South Africa (Pr. Prod.M) in 1981.Laurence gained experience in underground mining geology on the asbestos mines in Rhodesia (block caving) followed by more general experience on the Witwatersrand Gold Mines on the East and Far East Rand. Opencast geological experience was gained on numerous smaller opencast mines involved in various Industrial Minerals such as fluorspar, kaolin, bentonite, pyrophyllite, limestone etc.Exploration experience was obtained in a number of countries and involved prospecting for many minerals although the principle thrust was for gold and tin/tantalum deposits.

          Techniques ranged from outcrop mapping and sampling through various geophysical target defining methods to geochemical sampling.Laurence has spent a number of years managing production from mining operations, principally involving industrial minerals. As Head of Technical Services Laurence established a Technical Services Department and spent two years managing the functions of geology, survey, draughting, mine planning and ventilation on a Witwatersrand Gold Mine.Laurence was appointed as Mine Manager at the mining operations of Transvaal Alloys (Pty) Ltd.

          This operation involved overburden stripping and the mining of 1000 tpd vanadium bearing magnetite.Extensive experience was gained as an independent gold producer from the retreatment of tailings as well as managing CIL operations for SK International. Alluvial diamond mining was also undertaken in the Northern Cape.


          Johan Horn

          Industrial Minerals Geologist

            Johan Horn is an industrial minerals geologist and studied at the Rand Afrikaans University in Johannesburg. He started working at the Geological Survey of South Africa in 1978 on a 3 year national exploration project on finding and evaluating bauxite deposits in South Africa. “The genesis of bauxite in South Africa” was also the theme for the thesis for his M.Sc. degree awarded in 1986.

            Johan has +20 years years experience as an industrial minerals geologist and worked mainly in consulting to, and assisting Industrial Minerals exploration and mining companies, and the manufacturing industries in finding and characterizing and beneficiation of industrial mineral ores and deposits in terms of their chemical, mineralogical, physical and industrial application properties. During his time in the Geological Survey of South Africa and at the Council for Geoscience he worked on most industrial minerals and commodities This experience also focusses on industrial-mineral deposit targeting and applied industrial mineral research projects in which mineral application in industry is optimized. These applied research projects primarily focusses on problem identification and solving in the beneficiation and use of industrial minerals.

            He has developed knowledge in industrial minerals that are used in the ceramic, glass, absorbents, carrier, filler, agricultural, refractory, filtration and environmental impact control, construction and cements industries. He has been in private consultation since 2010 at IMC Industrial Minerals Consult SA (CC).


            Ernest Rood

            Industrial Minerals Consultant

              Ernest Rood has a B. Tech. Ceramic Technology Degree from Pretoria Technicon and worked in ceramic product development at G&W Industrial Minerals from 1992. He was Head of Product Development from 1996 to 2006, General Manager Mozambique Bentonite Development from 2007-2008 and National Sales Manager 2009-2010.
              Ernest now consults in industrial mineral applications for a wide range of industries including i) water treatment ii) binders for briquetting and pelletizing in metal and processing, iii) clay applications in civil engineering iv) agricultural fertilizer applications, v) ceramic processes and heavy clays.

              Michael Doerschug

              Industrial Minerals Consultant

                Michael Doerschug qualified in 1984 at Munich Technical University (Germany) in geology and in 1996 at St. Gallen University (Switzerland) in marketing.

                Before starting his professional career within Sud-Chemie he made some practical experience with JCI at Randfontein (South Africa). While at at Sud-Chemie he was responsible for exploration, quality assurance, mine coordination, mineral purchase and risk management in various international projects. Main targets were in Greece, Turkey, Indonesia, South Africa, Brazil and Argentina for bentonites, attapulgites, sepiolites and diatomites.

                Michael started his consulting career in 2007 and since then has managed various multinational projects within the supply chain for industrial minerals, mainly in China, Indonesia, India, Turkey, Ukraine, Morocco, Brazil, Peru and Argentina.

                Michael has particular strengths in configuration of international contracts, international project management, quality and risk management. He is proficient in German, English and has a some knowledge of Spanish and Turkish languages.