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MEM aprobó estudio de impacto ambiental de ToromochoLa Dirección General de Asuntos Ambientales Mineros (DGAAM) del Ministerio de En. While Chinalco had paid $ million for Toromocho, it expected to produce .. and Mines had to approve the EIA for an extractive project in Peru before. Gerald Wolfe pointed out that the company, which invested $ million in Toromocho last year, is waiting for the EIA approval to begin the construction phase.

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The Doe Run company operates a custom smelter in the town of La Oroya. The presentation of equivalent copper on Table is intended to provide a general basis for understanding the combined economic benefit of processing copper, moly, toeomocho silver.

Low grade leachable or millable material to a stockpile. Table summarizes the mine plan and production schedule. Densities are assigned based on the leach cap surface. A second flowsheet was developed to capitalize on the readily soluble copper in secondary copper minerals such as chalcocite, diginite, bornite and covellite.

From April to JanuaryCentromin carried out the last phase of major exploration drilling. Every effort was made to maximize core recovery. CMC allowed good final toronocho concentrate grades at good copper recoveries. IMC determined that selective mining of high arsenic could be accomplished and therefore these ores would be removed to allow the production of final copper concentrates of less than smelter penalty grade arsenic. These companies have mining concessions adjacent to the Toromocho Project.

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Toromocho mine – Wikipedia

The Morococha area is characterized by a series of folded paleozoic and mesozoic rocks, primarily calcareous sediments with some lesser intercalcated volcanic flows. The pit outline shown eka the sections represents an earlier resource declaration and is not intended to match the current reserve open pit designs.

Waste and stockpile storage is available immediately south and southwest of the Toromocho pit area. The Old Drilling pulps were reassayed torkmocho the following metals: The low grade mill ore stockpile is planned for rehandle to the mill at the end of the mine life. The copper grade is usually higher in the skarn forming large higher grade zones.

The Low Grade to Mill Stockpile is comprised of the low grade skarn ores at breakeven cutoff that are stockpiled to the east of the pit and are reclaimed to the mill after the pit is exhausted. The center of the Toromocho deposit torojocho about 2.

Kuhn has made multiple site visits and has been responsible for coordination of the metallurgical testing completed in Peru and elsewhere.

IMC has chosen not to use the old values for arsenic in the resource estimate.

The most surprising results were noted in using the most polluted water source, Kingsmill Tunnel outflow. The treated Kingsmill Torommocho waters consistently produce the highest copper grade final concentrates. PCI is negotiating to obtain surface access to some surface properties adjacent to the PCI holdings at this time.

The climate has two well defined seasons.

Toromocho mine

Sub-horizontal mineralized skarn zones occur that are somewhat distal from the central core of the deposit that are copper, zinc, and silver rich and are controlled by the Pucara bedding and structure. Property Location in Peru. The calculated recoveries and grades are global and do not represent the expected recoveries and grades for each year of production.

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Some of the information within this section is paraphrased from the Information Memorandum on Toromocho prepared by Credit Suisse, First Boston for Centromin during For clarity, IMC will refer to the drill hole data with the following convention: Sociedad Minera de Responsabilidad Limitada, Sociedad Anonima, and Condominium, which are organizations that also have mining concessions adjacent to the project.

Leach Cap Material above the 0. Data for four reported historic holes have not been found. HQ and PQ Core is boxed in wooden boxes at the drill rig. The pulp weight composites are then assayed at the CIMM labs togomocho Numerous composites were prepared for testing using fresh drill core.

The mineral concessions are summarized on Figure This procedure was accomplished by scanning vertically down each drill hole until the first total copper value of 0.

CNI to develop a wire frame model of the rock types based on the interpreted cross sections. Metal grades of copper and molybdenum are in roromocho by weight. The constraints on each population and the estimation methods for each of the populations are summarized on Table