Engineering & Mining Journal

OCT 2018

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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NEWS - CONTINUED OCTOBER 2018 • E&MJ 29 NEWS - CALENDAR OF EVENTS DECEMBER 3-7, 2018: American Exploration & Mining Association annual meeting, Spokane, Washington, USA. Contact: Web: DECEMBER 4-5, 2018: 1 st International Conference on High Perform- ance Mining, RWTH Aachen University, Aachen, Germany. Contact: Web: JANUARY 27-30, 2019: 45 th Annual Conference on Explosives and Blast- ing Techniques, Nashville, Tennessee, USA. Contact: Web: FEBRUARY 24-27, 2019: SME Annual Conference & Expo, Denver, Colorado, USA. Contact: Web: MARCH 3-6, 2019: Prospectors & Developers Association of Cana- da's annual conference, Metro Convention Center, Toronto, Canada. Contact: Web: MARCH 10-13, 2019: Haulage & Loading, Hilton El Conquistador Resort, Tucson, Arizona, USA. Contact: Web: APRIL 2-4, 2019: MiningWorld Russia, Crocus Expo, Moscow, Russia. Contact: Web: APRIL 8-14, 2019: bauma, Messe Muenchen, Munich, Germany. Contact: Web: APRIL 28-MAY 1, 2019: Canadian Institute of Mining (CIM 2019), Montreal, Canada. Contact: Web: MAY 7-9, 2019: Arminera, Centro Costa Salguero, Buenos Aires, Argentina. Contact: Web: MAY 20-22, 2019: Longwall USA, Pittsburgh, Pennsylvania, USA. Contact: Web: MAY 27-30, 2019: Exponor Chile 2018, Antofagasta, Chile. Contact: Web: AUGUST 27-29, 2019: AIMEX, Sydney Showgrounds, Sydney, Australia. Contact: Web: Correction In the article, Focusing the Flow (June 2018, pp. 50-55), the supplier of fans and software for Goldcorp's Éléonore mine ven- tilation control system was incorrectly identified in several in- stances as Howmet. The actual supplier of the mine's VentSim CONTROL software and Alphair fans is Howden, a well-known engineering firm specializing in air and gas handling. (Regional News-Latin America - from p. 15) from the town of La Ramada, located 3 km from the La Arena mine, trespassed illegally onto the company's property. The people disrupted mining operations and demanded compensation for alleged impacts of dust and vibrations from blast- ing activities. La Arena conducts extensive and reg- ular monitoring of the impacts from the mine blasts and the community partici- pates in these monitoring exercises. The result of the ongoing monitoring demon- strates clear compliance with the law and the Environmental Quality Standards set to protect the environment and communi- ties, the company said. The company temporarily suspend- ed mining operations at the time. It re- started operations on September 6 after protestors signed an agreement to partici- pate in a formal dialogue with Tahoe Peru to be hosted by the Ministry of Energy and Mines (MEM). Following the formal agreement, the protestors left Tahoe's property and operations successfully re- started with the overnight shift. Tahoe said it didn't think there would be a material impact to annual production as a result of the eight days of suspended mining operations. However, this event, together with the labor strike in the sec- ond quarter at La Arena have disrupted production, and the company now expects to be near the low end of its annual pro- duction guidance at La Arena of 160,000 ounces (oz) to 185,000 oz of gold. This happened after another incident where La Arena miners discovered five significant holes cut into the top of a preg- nant solution pipeline. Based on a prelim- inary investigation, the company believes that in an apparent theft attempt, holes were cut into the top of the pipeline to place bags of carbon inside the pipeline to absorb gold from the solution. One of the bags of carbon blocked the pipeline and about 600 m 3 of pregnant solution may have sprayed from the pipeline into the storm water management system. Upon identification of the discharge, Tahoe immediately initiated its emergency response protocols including conducting extensive inspections of the surrounding areas from the operation and assessing the potential impacts to the communities and environment downstream. The com- pany reported the incident to regulators and the local authorities. Antofagasta Grants Contract Extension to Thiess Thiess has been awarded a A$420 mil- lion (US$303 million) contract extension by Antofagasta Minerals to continue op- erations at the Encuentro open pit locat- ed in northern Chile. Under the four-year contract extension, Thiess will continue to provide mining services with a scope of works comprising of drilling, load and haul, mobile equipment maintenance, and mine services. "It's great to see Thiess continu- ing their work at the Encuentro project and building on the strong relationship they've established with AMSA over the past three years," CIMIC Group CEO Michael Wright said. "This contract re- inforces the team's engagement with and understanding of the client to en- sure they are delivering the best solu- tions possible." Since operations began in 2015, Thiess has moved more than 70 mil- lion m 3 . Planned future improvements include investment in maintenance infrastruc- ture, a fleet management system and transfer to Thiess of short-term mine planning responsibilities.

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