She volunteered for the dangerous work of filling shells with Amatol explosive. The complete projectile weighs and is filled with of amatol. The SB 2500 was filled with either Amatol or "Trialen 105". Fillings could be Amatex, Amatol, Minol, RDX and others. The Atlantic City Speedway was built on part of the Amatol site in 1926. Relatively unsophisticated cannery equipment can be adapted to amatol production. The TNT and ammonium nitrate (used to manufacture amatol) had exploded. The primary ammunition was HE (high explosive) shells filled with Amatol, Trotyl (TNT) or Lyddite. It had an operational range of and carried a warhead, with an amatol explosive charge. The lowest grades of amatol could not be produced by casting molten TNT. The explosive employed was amatol 60/40 detonated by an electric contact fuze. Amatol exploits synergy between TNT and ammonium nitrate. Amatol is rare today, except in legacy munitions or unexploded ordnance. Warheads for the German V-1 flying bomb and V-2 rockets also contained amatol. Amatol is a highly explosive material made from a mixture of TNT and ammonium nitrate.