This paper discusses an approach to formal methods technology exploitation which introduces formal notations into critical systems development processes. The provision of “Ω functions” that map graphical specifications into axiomatic formal specifications, which can then be subjected to proof, is explored as a means of achieving this goal. Such functions must treat a useful subset of the graphical language and be compatible with industrialized tools. Experiences in developing this approach for industrial application are discussed by means of an example mapping function known as Ω1. This function maps a subset of statecharts into Real Time Logic.