Taming EMI in microprocessor systems: The authors propose a systematic approach to limiting the effects of electromagnetic interference

It was late one summer afternoon in 1983, near the end of the day shift at a steel plant in the eastern United States. An operator using a new radio link was guiding the last ladle of molten steel as it moved along an overhead track from the blast furnace to the ingot molds. Soon the end-of-shift horn would sound. Without warning, the ladle tipped prematurely as it neared the molds, pouring hot steel on the floor and on some of the workers.