Aresearch.67 net.columbia utzoo!decvax!duke!chico!harpo!cbosg!ihnss!mhtsa!research!sjb Tue Sep 29 17:36:26 1981 fuel spill Reinstallation of the shuttle's 352 tiles began yesterday and workers are working around the clock. They hope to get up to 30 installed per day. Decontamination of the Forward Reaction Control System has already been completed, but 16 of the 26 thermal blankets removed still must be replaced. Engineers have decided to unload the nitrogen tetroxide fuel that was loaded before the accident to filter it for iron nitrate.