[en] The paper describes nuclear fission reactor characteristics as neutron producers and their use with targets of molybdenum-98 and uranium-235 to produce ⁹⁹Mo. Tabulations of reactors used and their characteristics are shown. A new method for ⁹⁹Mo production using an aqueous homogenous reactor is described showing the potential for 1/100^th waste, uranium consumption and power level for a given quantity of ⁹⁹Mo. A graph is shown of the expected growth in ⁹⁹Mo use and world-wide costs. The use of low-enriched (less than 20% ²³⁵U) in the homogenous reactor system is possible. (author)