Nuclear fuel ¡High temperature reactor fuel kernels/U0 2 , Th0 2 , (Th, U)0 2 /Aqueous chemical processes Summary Two aqueous chemical processes are described that are particularly suitable for the preparation of High Temperature Reactor Fuel. The first process produces Th0 2 or (Th, U)0 2 kernels; the second one uranium bearing kernels consisting of U0 2 , VC x Oy or UC 2 . A short description of the equipment developed is also given.