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Pastimes : Shuttle Columbia STS-107 -- Ignore unavailable to you. Want to Upgrade?

To: H-Man who wrote (288)	2/4/2003 5:03:20 PM
From: Bill Jackson	Read Replies (1) \| Respond to of 627

H-man, I expect the caution about toxic chemicals is to prevent souvenir hunting. Apparently the police are having trouble with people simply taking items already. At the temperatures involved all explosive bolts would have burned, degraded or exploded. A tank full of hydrazine would have dramatically increased it's pressure with the temperature, and may well have vented it's safety seal(the seal would vent the gas to stop the shattering of the tank). If the tank stayed intace while it fell, it would hold a residue of the initial charge. Possibly the safety vent would reseal at sea level, possibly the tank would be broken mechanically and would vent whatever. Small amount would remain. It is very irritating at far less than 50 PPM., so one would have to be strong to stay and breath a fatal dose. I saw a pibreglass presure vessel among on of the debris photos. It was intact, but had layers of fiberglass frayed away. It seems to be 5-6 feet in diameter. I have no idea if it still held anything. Bill