Copyright ©2008-2017 , owned by the Independence Hall Association in Philadelphia, founded 1942.
“‘Don’t go to school today,’ my mother said. ‘Why?’ my sister asked.
It was the second atomic bomb , dropped on Nagasaki, that induced the Japanese to surrender.
If you think the news can’t get any worse, hackers will be happy to correct you.
The first plutonium core , along with its polonium-beryllium Urchin initiator , was transported in the custody of Project Alberta courier Raemer Schreiber in a magnesium-field carrying-case designed for the purpose by Philip Morrison. Magnesium was chosen because it does not act as a tamper.  The core departed from Kirtland Army Air Field on a C-54 transport aircraft of the 509th Composite Group 's 320th Troop Carrier Squadron on 26 July, and arrived at North Field on Tinian on 28 July. Three Fat Man high-explosive pre-assemblies, designated F31, F32, and F33, were picked up at Kirtland on 28 July by three B-29s; two, Luke the Spook and Laggin' Dragon , from the 509th Composite Group's 393d Bombardment Squadron plus one from the 216th AAF Base Unit, and transported to North Field, arriving on 2 August. Upon arrival, F31 was partly disassembled in order to check all its components. F33 was expended near Tinian during a final rehearsal on 8 August, and F31 was the bomb dropped on Nagasaki . F32 presumably would have been used for a third attack or its rehearsal. 
General conditions of blood injury:
—From day of exposure: nausea, vomiting, general malaise.
—From 10th to 14th day: loss of hair, marked malaise, persistent fever, decrease of white blood cells, followed by anemia, decrease of blood platelets, gingivitis (bleeding gums), oropharyngitis, and skin perpura.
---In persons surviving over 20 days: drop of red cell count, but symptoms began to improve with gradual recovery of white cell and platelet counts.