Men opening steam valve on page 13: Courtesy Philippine National Oil Corporation; pipeline on page 13 and aerial view and inset of electrical generating plant on page 15: Courtesy of National Power Corporation (Philippines); production well and steam pipeline on page 15: Courtesy of Philippine Geothermal, Inc.
Auruventiili avavad mehed lk 13: Courtesy Philippine National Oil Corporation; torujuhe lk 13 ja õhuülesvõte ja väike foto elektrijaamast lk 15: Courtesy of National Power Corporation (Philippines); tootmispuurauk ja aurujuhe lk 15: Courtesy of Philippine Geothermal, Inc.