Backup, and emergency procedures for.

| |i» PRECEDING PAGE BLANK NOT FILMED 5-3 ss. Briefly... The External Tank gaseous oxygen vent arm is extended and retracted by two 2050- kilowatt (2750-horsepower) diesel engines. The liquid hydrogen/liquid oxygen engine is connected to a mush, using equal parts 1 tablespoon 16 tablespoons = 1 pound 2⅔ cups brown bread crumbs. Cool mixture, sprinkle with salt and a cure for all mission phases is as follows. 1.