"Key technologies" is an umbrella term for appropriate technologies applied to give maximum economic benefit in particular circumstances that may cross traditional disciplinary boundaries. Development of the concept is necessitated by the rate of change of technological development. Key technologies may be classified in three groups related to materials, components, and manufacturing and process. Although it is difficult to pick out the key technologies that may be most significant in the future, developments in "materials" are likely to lead to many innovations. By their very nature, it is not possible to provide an exhaustive list of key technologies. The following are ways to recognize key technologies: (1) access to development in related fields; (2) use of technological databases; (3) use of the company's own staff; and (4) an annual review to keep up to date. The application of the key technologies concept leads to innovation. It moves late reformers up to a position in which they innovate earlier to the advantage of their organization. The role of education is to ensure that recruits to industry are trained to recognize appropriate key technologies. Educators need to incorporate the key technologies concept into their curricula and identify processes that may be applicable in other curricular areas. Key technologies should be a basis for continuing education and involve interdisciplinary student assignments. (Appendixes include 15 references and model interdisciplinary assignments.) (YLB)