86 87 creation and influence was such that, in 1925, La Oroya became the capital of Yauli province. A model refinery The plant circuit was quite efficient, according to a public document by Osinergmin. It was capable of smelting and refining copper in excess of 98.5% purity from the moment it initiated operations. In fact, one of the standards that the refinery maintained during Copper’s administration was the high purity of its different products, which was also due to the raw material that came from the rich polymetallic deposits of the central highlands. The mineral circuit in the foundry began with the Preparation Plant. There the concentrates, fluxes and recirculating material were mixed, which through a roasting process, removed Left– The smelter was built in three years and quickly replaced Tinyahuarco. Right– The railroad was the fastest and safest way to and from Lima and Callao. Down– What was an empty field was quickly populated by people looking for work. cerro de pasco The greatest investment of the XXth century
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