Jul
16
1941
The Blenheims passed over Rotterdam, where two warehouses and a factory were set alight, so low that one aircraft severed the cable of a derrick. Heavy anti-aircraft fire was encountered and four of our bombers were lost, two of these having scored direct hits before being shot down.
Jul
15
1941
We have now reached the conclusion that it will be possible to make an effective uranium bomb which, containing some 25 lb of active material, would be equivalent as regards destructive effect to 1,800 tons of T.N.T. and would also release large quantities of radioactive substance, which would make places near to where the bomb exploded dangerous to human life for a long period.