Location Malden Island data
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Explosions
3
Total yield
1.2 MT
First shot
1957-05-15
Last shot
1957-06-19
| Operation | Name | Date | Location | Yield |
| Grapple | Short Granite | 1957-05-15 | Malden Island | 300 kT |
| Grapple | Orange Herald | 1957-05-31 | Malden Island | 720 kT |
| Grapple | Purple Granite | 1957-06-19 | Malden Island | 200 kT |