Doe Run Peru Begins Engineering on Third Sulfuric Acid Plant in La Oroya; New $71 Million Plant Expected to Help Further Reduce Emissions

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Doe Run Peru said Monday it has begun the engineering design phase of a $ 71 million sulfuric acid plant for the copper circuit at the company's La Oroya metallurgical facility. The new plant, which is scheduled to be operational in late 2009, is expected to further reduce emissions at the La Oroya metallurgical complex and bring them well below governmental limits.

Doe Run Peru continues to operate under agreed-upon timetables and remains committed to environmental awareness and operations that benefit the city and community of La Oroya

Doe Run Peru said Monday it has begun the engineering design phase of a $71 million sulfuric acid plant for the copper circuit at the company's La Oroya metallurgical facility. The new plant, which is scheduled to be operational in late 2009, is expected to further reduce emissions at the La Oroya metallurgical complex and bring them well below governmental limits.

Earlier this year Doe Run Peru announced that lead and arsenic emissions from the 80-year-old facility are down to within monthly Peruvian environmental guidelines.

The new plant is the third and final stage of the last of nine projects encompassed under Doe Run Peru's environmental operating agreement with the Peruvian government (known by its Spanish acronym, PAMA). Earlier stages of the sulfuric acid project included upgrades to the zinc circuit plant (completed at the end of 2006) and the construction of the lead circuit plant (begun in July 2007).

"Doe Run Peru continues to operate under agreed-upon timetables and remains committed to environmental awareness and operations that benefit the city and community of La Oroya," said Juan Carlos Huyhua, president and general manager of Doe Run Peru.

Construction on the new copper circuit plant is estimated to be completed by October 2009. Doe Run Peru's first steps on the effort have included contracting industry leaders Fleck Chemical Industries Inc. and Aker Kvaerner to look into the specific engineering requirements necessary for the project, including the necessary teams, design, materials, control systems and instrumentation.

So far, Doe Run Peru has invested more than $132 million on various environmental improvements, well in excess of the initial agreed-upon amount of $107.5 million. Once the PAMA projects are complete the company's related investment is expected to reach $244 million, nearly 2.4 times the initial figure.

About Doe Run Peru
Doe Run Peru is a mining and metals company operating in Peru's central Andes. The company has run the La Oroya metallurgical complex since 1997 and the Cobriza mine in Huancavelica since 1998, producing high quality refined metals while at the same time working to operate in a socially and environmentally responsible way.

For more information please visit: http://www.doerun.com.pe.

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Victor Andres Belaunde

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