The Swiss Hunziker company developped in 1937 a Splitter bomb made from "spun concrete" (Schleuderbeton) in order to offer a solution to the shortage of metal taht was already becoming acute in Swiss - This shortage will in fact delay the production of the 200kg bomb till after ww2.
The description given by the company was as follows:
"The projectile body has a fairly thick spun concrete shell containing a large number of spheres cast into it, which are intended to act as fragments upon detonation (a bomb as shown in the attached illustration is intended to contain 8.5 kg of spheres in the bomb body)."
Total weight was given as 13kg
Such bombs were tested in 1939, in collaboration with the French, at Bourges and the results were satisfying, even raising the interest of the British Defense authorities.
The outbreak of WW2 seem to have cut short further developments this experimental design.

The description given by the company was as follows:
"The projectile body has a fairly thick spun concrete shell containing a large number of spheres cast into it, which are intended to act as fragments upon detonation (a bomb as shown in the attached illustration is intended to contain 8.5 kg of spheres in the bomb body)."
Total weight was given as 13kg
Such bombs were tested in 1939, in collaboration with the French, at Bourges and the results were satisfying, even raising the interest of the British Defense authorities.
The outbreak of WW2 seem to have cut short further developments this experimental design.
