Show New Use for Farm Waste Peanut shells ground corncobs and similar waste agricultural materials materials materials ma ma- have been found useful for cleaning engines bearings valves pumps and other machinery and metal parts the Department of Agriculture Agriculture Agriculture Ag Ag- has announced The new use has been found by scientists at the Northern Regional Research Laboratory at Peoria Ill Several hundred tons of ground corncobs now are being used each month for burnishing metals and cleaning war machinery |