The policeman, hunched over the ground, was digging with the perseverance of an archaeologist. He dug slowly, dry dust billowing around him. When the stick he was using to probe the ground hit something solid, he stopped. "This might be it," said the policeman. An old PVC pipe jutted out. But when he began pulling at it, a colleague stopped him. "Not this one, it's smaller," said the man in Javanese. The policeman stood back, acknowledging his mi