The bombs were twelve feet long, less than a foot in diameter, weighed a mere seven hundred pounds, and were nicely streamlined to cut air resistance.

After the destruction of Pan Am Flight 103, some experts estimated that the bomb must have weighed between 10 pounds and 100 pounds.

The bomb typically weighs about 85 pounds when the incendiary fillers are used.

The bomb weighed no more than a pound and a man could carry up to thirty of them.

The bomb weighed 200 lb.

The atomic bomb weighed nearly half a ton, far too heavy to be carried back to the lands of the people on horseback.

Mr. Zaydan said the bomb weighed more than 30 pounds and had two switches in case one did not work.

In the process the purpose of the two carrying handles became clear: each bomb must have weighed at least ninety pounds.

Witnesses said the bomb must have weighed at least half a tonne and the impact shattered windows up to four blocks away.

Experts now estimate that the bomb weighed about 1,000 pounds and that the chemicals to make it were bought for a little more than $400.