Engineering & Mining Journal

JUL 2019

Engineering and Mining Journal - Whether the market is copper, gold, nickel, iron ore, lead/zinc, PGM, diamonds or other commodities, E&MJ takes the lead in projecting trends, following development and reporting on the most efficient operating pr

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Page 6 of 67

NEWS-LEADING DEVELOPMENTS JULY 2019 • E&MJ 5 "I'd like to congratulate Rio Tinto, Hi- tachi, and all the other project partners for their hard work and dedication over the past decade to delivering this project, which really cements our state as a global leader in rail technology," Western Austra- lia Minister for Mines and Petroleum Bill Johnston said. "AutoHaul has brought the rail freight industry in this country into the 21st century and is rightfully the subject of global interest. I'd also like to mention that the development of the world's big- gest robot is such a success because of the contribution from Western Australia's skilled engineers and innovative workers." Early results from the deployment of AutoHaul highlight the technology's po- tential to improve productivity, increase flexibility, and reduce bottlenecks in Rio Tinto's iron ore system. Rio Tinto's Pilbara operations are being transformed to flex in line with market conditions, and Au- toHaul is a vital component in increasing flexibility and safety in the system. Pala Will Buy Cobalt 27, Create Nickel 28 Pala Investments Ltd. will acquire all of Cobalt 27 Capital Corp.'s common shares, other than the approximately 19% that Pala already owns, for total consid- eration of approximately C$501 million. Under the terms of the transaction, Co- balt 27 shareholders will receive C$5.75/ share, comprised of C$3.57 in cash plus C$2.18 in shares of a newly listed com- pany to be named Nickel 28 Capital Corp. "As a long-term investor, this trans- action is aligned with our strategy of building sustainable value chains around the raw materials that support a chang- ing economy," said Stephen Gill, man- aging partner of Pala. "We look forward to remaining a supportive shareholder of Nickel 28, as it goes forward with a clean balance sheet to continue building its as- set base, in particular, by leveraging its recently acquired exposure to the produc- ing Ramu nickel-cobalt mine." Nickel 28 will hold Cobalt 27's joint-venture interest in Ramu, a low- cost, long-life producing nickel-cobalt mine, its royalty portfolio on future proj- ects, including the Turnagain royalty, a royalty over one of the largest undevel- oped nickel sulphide projects globally, the Dumont royalty, a shovel-ready nickel project in Canada, and certain equity po- sitions including in Giga Metals Corp. Several large mining companies have published details of how they manage their tailings storage facilities (TSFs) as requested by the Church of England Pensions Board and the Swedish Coun- cil on Ethics for the AP Funds, repre- senting 96 institutional investors. Anglo American published details of its 91 managed TSFs and an additional 62 TSFs at non-managed joint venture operations in which it has an interest. "We have confidence in the integri- ty of Anglo American's managed TSFs, which are subject to the highest global safety and stewardship standards, us- ing appropriate advanced technologies, such as satellite monitoring, fiber optics and micro-seismic sensors," said Mark Cutifani, CEO of Anglo American. "As an industry, we have a clear ethical and moral imperative to do everything possi- ble to ensure that TSFs are managed to the highest standards of safety." Cuti- fani said the company is also looking at several technologies to reduce the volume of waste material and its ability to remove water from that material and store it in a drier form. Anglo American completely revised and updated its technical standard for TSF safety management in early 2014. The standard is updated as appropriate and goes beyond regulatory and other industry requirements in all host juris- dictions, the company said. This man- datory global standard mitigates the long-recognized principal risk that TSFs pose, sets minimum requirements for design criteria, monitoring, inspection and surveillance, and was peer-reviewed by international specialists, according to Anglo American. Of the 91 TSFs managed by Anglo American, 40 are in active use, 33 are inactive or in care and maintenance, and 18 are closed or rehabilitated. In terms of the method of tailings storage, 39 use wet deposition while 52 use ei- ther dry-stacked or in-pit deposition. In addition to the requested de- fined information, Anglo American has also published its full Group Technical Standard in respect of Mineral Resi- due Facilities and Water Management Structures, available at www.anglo- Glencore has also launched a micro- site that provides detailed information its TSFs in response to the request. TSFs have been part of Glencore's cat- astrophic hazard evaluation program for a number of years and have drawn on external expertise applying leading standards from CDA (Canadian Dam As- sociation), ICOLD (International Com- mission on Large Dams) and ANCOLD (Australian National Committee on Large Dams), the company said. "Our group-wide dam integrity and safety assurance program involves an assessment against more than 100 dam safety and leading practice criteria," the company said. "As part of our ap- proach, we utilize the services of Klohn Crippen Berger, one of the world's lead- ing experts on TSF assurance, to inde- pendently audit and assess the integrity and safety of our TSFs." Glencore said it also conducts regular dam safety in- spection at all assets. The Glencore TSF microsite can be accessed at www.glen- Gold Fields Ltd. also responded to the request and released a TSF manage- ment disclosure document, available at It currently man- ages 32 tailings facilities, of which 12 are active and one will be commissioned imminently. A further two are managed by joint venture operations. Gold Fields said it maintains measures to manage its TSFs' safety, including compliance with the International Council on Min- ing and Metals' (ICMM) Tailings Gover- nance Position Statement. All Gold Fields' TSFs, as well as associated pipeline and pumping in- frastructure, are subject to an indepen- dent, external audit every three years — or more frequently where required by local circumstances or regulations — as well as regular internal inspections, monitoring and formal annual Engineer of Record reviews. During 2017 and 2018, external and internal reviews of its alignment with the ICMM position statements on water and tailings management were carried out. The conclusion was that the company is aligned with both position statements. Gold Fields said it is also evaluating moving away from the con- struction of upstream facilities to cen- ter-line or downstream designs, consid- ering filtered and dry stacked tailings, as well as in-pit tailings disposal. Major Mining Companies Release TSF Management Plans

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