It's a very long cylinder with conical ends. It noticeably takes the shape of a cigar, a shape already adopted in London for several projects of the same kind.
This involves melting the polymer and pushing the resulting liquid through a hollow needle, out of a hole in the needle's tip and onto a spinning drum, where it cools and solidifies.
When Speer dreamed of the ruins his buildings would eventually become, he probably wasn't anticipating that they would be ruined so soon or take the form of this decaying concrete cylinder.
During the first half of August, if we look at the lower branches of the pine trees, we shall discover, here and there on the foliage, certain little whitish cylinders spotting the green.
Hunger rattled its dry bones among the roasting chestnuts in the turned cylinder; Hunger was shred into atomies in every farthing porringer of husky chips of potato, fried with some reluctant drops of oil.
The automotive industry has been doing basically the same thing for 100 years, namely putting flammable liquid in confined metal cylinders, blowing it up by either flame or pressure and generating power from it.