OceanaGold said an investigation into the incident was underway.
Didipio, which began production in 2013 and is located 270 km north of Manila, has a measured and indicated resource of 1.3 million ounces of gold and 160,000 tonnes of copper.
The mine produced 26,300 ounces of gold, about 28% of the company’s total gold production, in the first quarter of 2024.
Earlier this year, the Vancouver-based miner sold 20% of its unit in Philippines through an initial public offering.


