What had been that altitude that explosion Hardtack Teak?
Explosion Location Date Yield (approximate) Altitude (km) Nation of Origin
List of artificial radiation belts
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List of Artificial Radiation Belts
Hardtack Teak Johnston Island ( Pacific ) 1958-08-01 3.8 megatons 76.8 United States
Hardtack Orange Johnston Island ( Pacific ) 1958-08-12 3.8 megatons 43 United States
Argus I South Atlantic 1958-08-27 1-2 kilotons 200 United States
Argus II South Atlantic 1958-08-30 1-2 kilotons 256 United States
Argus III South Atlantic 1958-09-06 1-2 kilotons 539 United States
Starfish Prime Johnston Island ( Pacific ) 1962-07-09 1.4 megatons 400 United States
K-3 Kazakhstan 1962-10-22 300 s kiloton 290 USSR
K-4 Kazakhstan 1962-10-28 300 s kiloton 150 USSR
table_148578_1
SELECT Altitude (km) FROM table WHERE Explosion = Hardtack Teak
Hardtack Teak