Dubai World and MGM Mirage have announced that they plan to hire 12,000 staff for their joint CityCenter hotel and leisure project in Las Vegas, The National has reported. The recruitment drive for jobs at ARIA Resort and Casino, Vdara Hotel and Crystals retail district would be the 'single largest hiring effort in the nation', the company said. The jobs range from bartenders and cooks to prop handlers, slot operators and manicurists.