Liftbladders such as these are filled with sunshaft to make them lighter than the lift about them.
Sunshaft, or sunlift, is the tother of the shafts. Its token is He. On the board of shafts it is in the eighteenth gang and the first eftwending and is one of the athelmists.
The name "sunshaft" is from its being laid bare in the Sun, in 1868, by Norman Lockyer and Edward Frankland, who found it by its rainbowmarks in sunlight before it was ever found on Earth.
Sunshaft comes in two abiding evenstows: 3He and 4He. The meaner of these is 4He, which has two ekemotes and two evenmotes in its kernel. The much more geason 3He has two ekemotes, but only one evenmote. While sunshaft is seldseen on Earth, it is the next-most fulsome after watershaft in the heavens, it having been made in the big bang alongside watershaft.
Sunshaft cannot be found in the liftshell of the Earth or other stony worlds; it is shed into the heavens for its lightness. Instead it must be found underground, where it is given off by lightrotting ores. For most of the twentieth hundredyear, only the Oned Riches had weighty lodes of sunshaft, but nearer to latterday times, Algeria and Qatar have found lodes of their own, and now wrestle with the Oned Riches for sunshaft's world trade.