A aerial view of Finland's Metsa-Botnia paper mill in Fray Bentos April 4, 2007. The plant, which represents the biggest ever foreign investment in Uruguay, has sparked a major diplomatic squabble between Uruguay and its larger neighbor Argentina. Argentines living in Gualeguaychu, a city across the river from the plant, have protested the mill for months, saying it will dump toxins into the river, foul the area and ruin tourism when it starts up later this year while Bonita says it will alleviate pollution in the river, not worsen it. The company announced during a news conference on March 26, 2007 that the plant will start checking the production line this month and will start with the production of paper mill on September 2007.