2010 Copiapó mining accident steel rescue capsules, dubbed "Fénix" (English: Phoenix) were constructed by the Chilean Navy with design input from NASA. The navy incorporated most of NASA's suggestions and produced three rescue pods: "Fénix" 1, 2 and 3, all enhanced versions of the Dahlbusch Bomb used for mine rescue. "Fénix" 1 was presented to journalists and the miners' relatives for their assessment. The eventual capsule used to rescue the 33 men was the "Fénix 2", a device in diameter, narrow enough to avoid hitting the sides of the tunnel. It had retractable wheels to allow for a smoother ride to the surface, an
Miners in the Sky occur". (The reader is not told what this may be, except that it is evidently valuable enough to kill for.) The extra-solar environment is chosen by Leinster in order to convey the feeling of an ever-expanding frontier - Sol's own Asteroid Belt has become "tame", as did the rings of Saturn, and the rough adventurous types move further on. (Leinster's historical model is obviously the recurring Gold Rush of the Nineteenth Century, drawing adventurers in 1840s from the settled East Coast to wild California, and in 1890s from settled California to the wild Klondike.) Miners in the Sky Miners in