> If anyone really gives a care I can try to find a demo
 > card which gives the amounts of various explosives
 > needed to breach different materials.  There are
 > several factors you have to take into account; the
 > explosive, the shape of the charge, if the charge is
 > tamped (has something placed on it to contain the
 > force), where the charge is placed, what the wall is
 > made from, what is behind the wall and how big of a
 > hole you want.  And those are just the basics.
That would be interesting, as when you see gas cylinders and gasoline tanks 
all around you, even see people smoking as they pump gas, the impression of 
danger tends to be underrated.
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