Marcopper Placer Dome Mining Disaster, Marinduque Island, Philippines
WEBAug 6, 2023 · In 1964, the Marcopper Mining Corporation was established and in 1969, Marcopper started its mining operations. Placer Dome owned % of shares of Marcopper, which was the legal limit of foreign involvement in Philippine companies. Until 1994, Placer Dome was the only company involved in the Marcopper mines; at least .