Historical perspective: Screens & air classifiers

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Courtesy of BioCycle Magazine

SCREENING equipment for the composting industry has become widely available, with a variety of options — including trommels, star screens, air classifiers and disc screens — to fit specific applications. But early on, in the 1960s and 1970s, screens were often homemade or adapted from other industries. Charles Melhoff, founder of Wildcat Manufacturing Co., says that although they began making compost windrow turners for farmers in the mid 1970s, it wasn’t until the composting industry was more established in the 1980s, with municipal and commercial composters, that he saw the need to expand Wildcat into trommel screens.

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