Heavy Metal Pollution Detected in Teluk Bang River After ...
Oct 02, 2019· Granite is known to contain radioactive elements, like radon gas, which may occasionally be emitted when granite is mined from the earth. Radon can cause cancer and other health concerns after years of exposure, according to MSI Surfaces.. A quarry in Teluk Bang, Penang, has been illegally mining tens of thousands of tonnes of granite without approval from the relevant authorities.