Back in Rehovot, he met with Dostrovsky, who took from the safe in his office a big metal lump covered in wax paper. The professor placed it in the hands of the excited young major and asked him if he knew what it was. “Like lead, but much heavier than lead,” the young man answered. “Uranium, it must be uranium.” Both men were silent, but they both understood, without saying it explicitly, what the purpose of Hemed Gimmel was and what its mission was: to create a new bell jar for the Jewish state.