Furnaces of the External Tank gaseous.

— EL 14.3m (47 FT) -— EL 8.2m (27 FT) — STRUCTURE EL 63.1 m (207 FT) —— EL 57.6m ZN (189 Im EL 57m (187 FT) — MLP DECK 0 — EL 18m (59 FT) EL 20.4m (67 FT) — ROTATING.