Earlier versions of the Minuteman used the M55A1 for the first stage.
The droving chisel is used for the next stage, making the surface of the stone flat enough to use.
But a spy could use it for the last stage of his landing.
That's what they were using in Igen and Keroon for the first stage of the illness.
This is so far used only for the upper stage of another rocket like the SSB-8 Centaur.
Where space is at a premium, two smaller cylinders of a large sum volume might be used for the low-pressure stage.
The problem was that rocket fuels, especially the liquid fuels always used for the final stage of a space launch, were essentially high explosives.
It was also used for the final stage in Lollipop Chainsaw.
A two chamber version of Gamma, used for the second stage of the Black Arrow satellite launch vehicle.
This was an 8 chamber development of Gamma, used for the first stage of the Black Arrow satellite launch vehicle.
