By ROD McGUIRKMORANBAH, Australia (AP) â¿¿ A lone woman checking into a motel in the Australian mining town of Moranbah can expect some blunt questioning from the owners: "Are you a working girl?" Turning on a heel and storming away indignantly will be taken as an admission to prostitution. "That sort of reaction is really positive proof as far as I'm concerned," said Joan Hartley, the 67-year-old owner of the Drover's Rest Motel and champion of motel operators who want to rid their businesses of sex workers cashing in on a mining boom. Moranbah in the coal-rich Bowen Basin is part of the new landscape of Australian mining. Workers are increasingly leaving their homes and families for weeks on end to earn big money in distant mines in the Outback. It's a workforce known as fly-in, fly-out, or FIFO (feye-foh) for short. Where the FIFO miners go, the FIFO prostitutes follow. With miners earning 110,000 to 160,000 Australian dollars ($100,000 to $150,000) a year, many sex workers find working the remote mining towns more lucrative than the economically moribund cities in which they live, despite the travel costs and a recent slowdown that has seen the mothballing of some inefficient mines. Not everyone in small-town Australia has welcomed the sex workers. Though prostitution is legal nationwide, the two main mining states â¿¿ Queensland and Western Australia â¿¿ have promised or passed laws restricting their activity. Their arrival has fed into broader fears that transient workers â¿¿ miners included â¿¿ and their urban values pose a threat to a close-knit, rural way of life. Moranbah, a town in Queensland, is one such place. Its population of 11,000 doubles if the FIFO miners housed in nearby camps are counted. Until a recent slump in coal prices, the 42-year-old town was one of the fastest-growing places in Australia.