In 1965 John Roest built a cattle scale on his farm near Radium in the Northern Transvaal to meet his specific requirements. Forethought in the construction facilitated uncomplicated and effective operation. Demand from neighbours resulted in the design being patented and units manufactured to initially satisfy local requirements.

By 1976 when Radium Engineering was established, the exceptional quality, innovative design and dependability of their implements was well recognized and accepted throughout the agricultural industry.

Under the leadership of John's son Mike Roest, Radium Engineering has gone from strength to strength and now employs in excess of 100 well trained staff, manufacturing and marketing a comprehensive range of quality agricultural machinery through their extensive production facilities in Babelegi, north of Pretoria.

An ongoing research and development program ensures that Radium products are at the forefront of current technology, both in new product design and in further development of existing models. The production facility and its equipment is being continually updated to keep abreast of the latest manufacturing methods.

The third generation of the Roest family, sons Gareth and Grant, have now taken their places with the Radium team as Radium Engineering supplies an extensive dealer network throughout South Africa as well as exporting to neighboring states and overseas.