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-CALENDAR OF EVENTS
MARCH 4–7, 2012: PDAC, Toronto, Canada. Contact: Prospectors and Developers Association of Canada; Tel: 416-362-1969; Fax: 416-362-0101; E-mail: info@pdac.ca; Web: www.pdac.ca.
MARCH 12–14, 2012: Economic & Evaluation Investment Decision Methods, 3-day course, Golden, Colorado, USA. Contact: Colorado School of Mines; Web: www.csmspace.com.
MARCH 19–22, 2012: 114th National Western Mining Conference & Exhibition, Denver, Colorado, USA. Contact: Colorado Mining Association; Tel: 303-575-9199; E-mail: jcourtney@coloradomining.org; Web: www.coloradomining.org.
MARCH 19–24, 2012: 2012 Alaska Miners Association Biennial Conference in Fairbanks, Alaska. Contact: Delbert Parr; Tel: 907-490-2207; E-mail: Delbert.Parr@Kinross.com; Web: www.arcticminers.org.
APRIL 9–13, 2012: Expomin 2012, Santiago, Chile. Contact: Christa March; Tel: 201-251-2600 ext. 116; E-mail: christam@kallman.com; Web: www.kallman.com.
APRIL 24–26, 2012: 3rd International Conference on Shaft Design and Construction 2012, London, UK. Contact: Paul Harris, IOM Communications; Tel: 44 (0)20 7451 7302; E-mail: paul.harris@iom3.org; Web: www.iom3.org/events/dsm .
MAY 3–9, 2012: The Canadian Institute of Mining, Metallurgy and Petroleum's 2012 Conference & Exhibition, Edmonton, Alberta, Canada. Contact: CIM; Tel: 800-667-1246; Web: www.cim.org/edmonton2012.
MAY 6–7, 2012: Mining Orissa, India. Contact: The Indian Mining & Engineering Journal, S.K.Mahanta; E-mail: i.me.journal@hotmail.com.
MAY 14–16, 2012: 10th International Peru Gold Symposium, Lima, Peru. Contact: Sociedad Nacional de Minería, Petróleo y Energía; Tel: (511) 215-9250; Web: www.simposium-internacional-oro.snmpe.org.
MAY 14–17, 2012: Business Improvement in Mining Africa 2012, Johannesburg, South Africa. Contact: IQPC South Africa; Tel: 971 4 364 2975; E-mail: enquiry@iqpc.ae; Web: www.businessim- provementinmining.com.
MAY 14–18, 2012: Economic & Evaluation Investment Decision Methods, 5-day course, Golden, Colorado, USA. Contact: Colorado School of Mines; Web: www.csmspace.com.
MAY 16–19, 2012: Future Mongolia, Ulan Bator, Mongolia. Contact: VF Messen GmbH; E-mail: info@future-mongolia.com; Web: www.future-mongolia.com.
MAY 26–JUNE 2, 2012: ALTA Nickel-Cobalt-Copper, Uranium & Gold Conference, Perth, Western Australia. Contact: ALTA Metallurgical Services; Tel: 61 3 5472 4688; Fax: 61 3 5472 4588; E-mail: alantaylor@altamet.com.au; Web: www.altamet.com.au.
NEWS-CONTINUED
"Execution risk is expected to be con- siderably reduced as a result of both pro- jects' proximity to our current operations and our longstanding knowledge and experience of working closely with the surrounding communities," said Hoch- schild CEO Ignacio Bustamante. "In addition, exploration work will continue at both sites to add more resources not included in the feasibility studies but which we are confident will positively impact the projects going forward." The Inmaculada project is 60%- owned by Hochschild and is an under- ground operation with planned produc- tion rates of 3,500 mt/d of ore and 12 million oz/y of silver equivalent ounces.
26 E&MJ; • FEBRUARY 2012
Initial capital cost to develop the project is estimated at $315 million. Resources at the project total 150 million silver equivalent ounces.
The Angela vein of the Inmaculada mine will be accessed via a ramp from a portal located at an elevation of about 4,400 m above sea level, declining to about 4,300 m toward the middle and lower end of the vein. Sub-level stoping uti- lizing long-hole drilling and paste backfill will be used to mine about half of the ore reserve, with the remainder being mined using cut-and-fill, with horizontal drilling. A primary crusher will be sited close to the portal, with a 1.5-km conveyor belt transporting ore to the plant and a waste dump located 1 km to the south. The processing flowsheet includes primary
crushing, SAG milling, secondary grind- ing, cyanide leaching, Merrill Crowe pro- cessing, pressure filter separation, and smelting to obtain a doré product. Hochschild owns 100% of the Crespo project, which will be a relatively simple open-pit operation. Production is planned at 6,850 mt/d of ore and 2.7 million oz/y of silver equivalent ounces. The strip ratio is 1.15:1. Drilling and blasting will be car- ried out directly by Hochschild, with earth- works being developed by contractors. Processing will include primary, second-
ary, and tertiary crushing; agglomeration; heap leaching with cyanidation; Merrill Crowe processing; pressure filter separa- tion; and smelting to obtain a doré product. Initial capital cost to develop the Crespo project is estimated at $111 million.
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MAY 29–JUNE 2, 2012: M&T; Expo 2012, São Paulo, Brazil. Contact: Cristina Bighetti; E-mail: cristina@timepress.com.br; Tel: 55 11 5585 9787; Web: www.mtexpo.com.br.
MAY 30–31, 2012: AIMS 2012 7th International Symposium: Rockbolting and Rock Mechanics in Mining, Aachen, Germany. Contact: Mirjam Rosenkranz; E-mail: rosenkranz@bbk1.rwth-aachen.de; Web: www.aims.rwth-aachen.de.
MAY 30–JUNE 1, 2012: Western Mining Electrical Association Bi-annual Meeting, Reno, Nevada, USA. Contact: WMEA; Web: www.wmea.net.
JUNE 4–8, 2012: 27th Annual Mining Expo, Elko, Nevada, USA. Contact: The Elko Convention & Visitors Authority; Tel: 800-248-3556; Fax: 775-738-2420; E-mail: jennifer@elkocva.com; Web: www.elkocva.com.
JUNE 5–8, 2012: UGOL Rossii & Mining 2012, Novokuznetsk, Russia. Contact: Messe Düsseldorf GmbH; Tel: 49 (0)211 4560-01; E-mail: infoservice@messe-duesseldorf.de; Web: www.ugol-rossii.com.
JUNE 12–14, 2012: Euro Mine Expo, Skellefteå, Sweden. Contact: Anna Sellberg; Tel: 46 (0)90 16 34 09; Fax: 46 (0)90 14 24 81; E-mail: info@eurominexpo.com; Web: www.eurominexpo.com.
JULY 4–6, 2012: III International Mining and Metallurgy Congress, Astana, Kazakhstan. Contact: Gulziya Asylbekova; Tel: 7 (727) 258 10 11; E-mail: g.assylbekova@expo-kz.kz; Web: www.expo-kz.kz.
JULY 24–26, 2012: Queensland Mining & Engineering Exhibition, Mackay, Australia. Contact: Web: www.miningandengineeringwa.com.au.
JULY 16–20, 2012: Economic & Evaluation Investment Decision Methods, 5-day course, Golden, Colorado, USA. Contact: Colorado School of Mines; Web: www.csmspace.com.
SEPTEMBER 5–6, 2012: MEMSA Annual Technical Symposium, Clearwater, Florida, USA. Contact: Mining Electrical Maintenance Association.; Web: www.miningelectrical.org.
SEPTEMBER 10–14, 2012: Electra Mining Expo, Johannesburg, South Africa. Contact: Specialized Exhibitions (Pty) Ltd.; Tel: 27 (0) 11 835 1565; Fax: 27 (0) 11 496 1363; Web: www.electramining.co.za.
SEPTEMBER 24–26, 2012: MINExpo, Las Vegas, Nevada, USA. Contact: Hall-Erickson Inc.; Tel: 866-717-6463; E-mail: minexpo@hei- expo.com; Web: www.minexpo.com.
NOVEMBER 14–16, 2012: Western Mining Electrical Association Bi-annual Meeting, San Antonio, Texas, USA. Contact: WMEA; Web: www.wmea.net.
(Latin America Regional News - from p. 14)
