High Quality Content by WIKIPEDIA articles! The Valdivia Pulp Mill or Planta Valdivia is a pulp mill and biomass-fueled electrical generating station in San Jose de la Mariquina, Los Rios Region, Chile. Although the main activity is wood pulp production it generates 61 MW of electricity from the burning of volatiles and black liquor. The plant was built in 2004 and is owned by Celulosa Arauco y Constitucion.In 2004 and 2005 thousands of Black-necked Swans in the Carlos Anwandter Nature Sanctuary in Chile died or migrated away following major contamination by a newly opened CELCO pulp mill located near the city of Mariquina and Cruces River which feeds the wetlands. By August 2005, the birds in the Sanctuary had been "wiped out"; only 4 birds could be observed from a population formerly estimated at 5,000 birds. Autopsies on dead swans attributed the deaths to high levels of iron and other metals polluting the water.

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