Read Neal Cruz’s May 31st article in PDI about some South Korean businesspeople allegedly engaged in illegally carting off bags and bags of black sands from the shores of different Cagayan municipalities to be shipped off to their country and used (well, the magnetite in the sands) as an ingredient in transforming iron ore to steal (this on top of other news that some South Koreans also succeeded in building a high-rise in the middle of a Philippine forest cover and had intended to build a hotel and spa right at the foot of Taal Volcano before townspeople rose in indignant protest to thwart them).
People in Cagayan also rose in protest because the removal of large quantities of sand from the beaches (besides making them unsightly) will cause seawater to seep into farmlands, making them unproductive.