It wasn't even a name that could be found on a map. But the word 'Poseidon' remained in the headlines for weeks on end. In the waterless outback of Australia prospectors working for the-Poseidon Company found huge nickel deposits, and Stock Exchange speculators caused shares to rocket from a few pence in value to as high as £124. What happened to the people out there -the prospectors, the mining men, the inhabitants of the almost deserted ghost towns left behind when the gold - mining boom petered out? Now all of them may be in at the beginning of a new kind of Klondike, from the girls in the unofficial, but thriving brothels of Kalgoorlie, to the old men who've seen it all before. In one outback town of less than 500 people there are already nine millionaires including Amy Pilletti, once a cook in a local hotel. There have been gun-fights and violence - all part of the problems caused when you want a share in Poseidon.