"Jeroen Wenting" wrote in message
...
a concrete block three feet long used as a bomb substitute would weigh no
more than maybe 50 pounds.

Incorrect, a concrete block 3ft long and 6" square will weigh
over 100 lbs. If its 1ft square it'll weigh 400 pounds

Doesn't make a deep crater when falling from an aircraft at a lowlevel
penetration mission.


But does from medium/high level !

The RAF used concrete filled laser guided bombs to take out
precision targets in Basra , it destroys the room but no the
rest of the building.

Keith