The logistics of installing the Cauldron required extensive preparation. Upon its completion, the cauldron was lifted onto the roof at the north-east end of the Bird's Nest, requiring an 800-ton load crane, two months before the Opening Ceremonies. Extensive secrecy surrounded its relocation, with the aim of keeping its design secret to the public and press until the opening ceremony. To protect it from wind and rain, and to conceal its appearance, a reverse U-shape air-cushioned facility was erected over the top of the cauldron, which was laid on its side flat along the stadium's roof. An automatic hydraulic system was installed on the roof with the purpose of moving and slotting the cauldron into its final intended position on the inside rim of the stadium's roof during the final segments of the opening ceremony. The mechanics consisted of a flat cart to hold the cauldron and a rail track to transport it to the edge of the roof. When in position, it was moved into an upright position with the assistance of a hydraulic jack and held in place from below by steel supports. The Cauldron, plus the entire mechanical apparatus to move it into position, weighed in excess of 405 tons.
