Engineering geological research study of the volcanic rocks in the Tseung Kwan O area was completed in 1998 and further studies are being carried out in the Sha Tin and Kowloon areas.

• 土力工程处在一九九八年完成对将军澳火山岩的工程地质研究，现时正在沙田及九龙地区作进一步的研究。