(Jon of he Clue Crew delivers the clue from White Sands NASA Test Facility in New Mexico.) Used to test propellants & explosives, NASA's White Sands High Energy Blast Facility can withstand blasts of 500 pounds of trinitrotoluene, also known by this 3-letter term
Labeled Main Event, the recent tests at White Sands (NM) Missile Range 
were the ... combat vehicles including tanks, a tactical communications center, 
and an ... oiL The stack is37 feet high, 30 wide, 600 tons, equals 500 pounds TNT
.