When rescue day arrives, the miners will be brought to the surface in a bullet-shaped pod designed by the Chilean navy's shipyards and nicknamed Phoenix. Three extra capsules have been brought to the site as reserves. Rescuers will use an Austrian-made hoisting system of pulleys and cranes to lower the cage down the shaft and extract the miners one at a time. Each round trip will take from an hour to 90 minutes, with the entire operation lasting an estimated 37 hours. Should a miner hit a snag during the ascent, he will be able to lower himself back to the shelter using wheels on the sides of the capsule.