Conversation so far:
What was the critical accident?
At 3:20 p.m., the screwdriver slipped and the upper beryllium hemisphere fell, causing a "prompt critical" reaction and a burst of hard radiation.
How bad was the injury?
the scientists in the room observed the blue glow of air ionization and felt a heat wave.
Slotin experienced a sour taste in his mouth.
Did slotin recover?
he had already been exposed to a lethal dose of neutron radiation.
When did he die?
25 May 1946, four of the eight men exposed during the incident had been discharged from hospital.
Any other interesting aspects about this article?
As soon as Slotin left the building, he vomited, a common reaction from exposure to extremely intense ionizing radiation.

Question: What other symptoms did he have?
Self-contained rewrite: Besides vomiting, what other symptoms did Louis Slotin have?