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verification. (December 2011)| Blockbuster or "cookie" was the
name given to several of the largest conventional bombs used in
World War II by the Royal Air Force (RAF). The term blockbuster
was originally a name coined by the press and referred to a bomb
which had enough explosive power to destroy an entire city
block. The bombs then called Blockbusters were the RAF's HC
(High Capacity) bombs. These bombs had especially thin casings
that allowed them to contain approximately three-quarters of
their weight in explosive, with the 4,000 pounder containing
over 3,000 pounds (1,400 kg) of Amatol. Most General-purpose
bombs (termed Medium Capacity—or MC—by the RAF) contained 50%
explosive by weight, the rest being made up of the fragmentation
bomb casing. Blockbusters got larger as the war progressed, from
the original 4,000 pounds (1,