National Geographic : 1943 Sep
0' J.P.McCulloch To Obtain Material for Building, the Timorese Construct Rude Kilns for Burning Coral They first cover a cleared area with a network of logs and brush, over which they spread rock quarried from ledges that were once ocean reefs. Atop layer of wood is added and set on fire. Heat calcines the coral rock and produces a powdered lime that makes excellentplaster. This pyre near Ossu spread over nearly an acre, and 200 natives were engaged in the work.