Although the main activity is wood pulp production, it also generates 61 MW of electricity from the burning of volatiles and black liquor.
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.
The plant was closed in 2005 after the company's lawyers reportedly produced a misleading environmental study regarding pollution on the Cruces River.
The scandal prompted Celco's chief executive to resign in June 2005 and the company to pledge to adopt cleaner technologies.
In a document signed the tourism company's CELCO was exempted from all responsibility involving the contamination of Cruces River.