The sweat-stained felt hats worn by Australian cowboys, as much a part of the Outback as kangaroos and sun-baked soil, may be heading for the history books. They fail modern industrial safety standards. It all stems from the death of a cowboy, who suffered massive head injuries after being trampled in a fall from a horse while mustering bulls in July 2001. His sole protection was the tattered hat provided him for shading from the sun. The New South Wales state government brought charges against the ranch owner, who employed 23-year-old Daniel Croker, convicting and fining the company $72,000 last...