The core involved was intended to be used in the Able detonation, during the Crossroads series of nuclear weapon testing. Slotin's experiment was said to be the last conducted before the core's detonation and was intended to be the final demonstration of its ability to go critical. After the criticality accident it needed time to cool. It was therefore rescheduled for the third test of the series, provisionally named "Charlie", but this was cancelled due to the unexpected level of radioactivity after the underwater "Baker" test and the inability to decontaminate the target warships. It was later melted down and reused in a later core.