Tests of a portable wood chipper
John L. Arend, Richard Neil Smith, Robert A. Ralston, Lake States Forest Experiment Station (Saint Paul, Minn.)
Lake States Forest Experiment Station, U.S. Dept. of Agriculture, Forest Service, 1954 - Nature - 37 pages
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12-knife machine 8-knife aspen brush Balsam fir bark chip material chip production rates chipping wood material chips per hour chips produced cubic feet cubic foot cutting knives cylinder depreciation diameter class DISPOSING OF BRUSH feeding the machine feet of chips feet of wood feet per hour fixed costs Forest Experiment Station Forest Products Laboratory freshly cut green chips green foliage growing season hauled inches in diameter increased jack pine Lake States Forest Lower Michigan material exceeding modified model moisture content mulch newer model machine oak brush operational costs oven-dry weight performance tests piled and burned piled brush pine chips portable chipper tested Portable wood chippers poultry litter pounds per cubic ratio of piled red pine right-of-way S. R. Gevorkiantz small brush solid wood species tree trimmings truck UTILIZING LOGGING RESIDUE volume of chips volume of wood wood chip production wood chip volume wood chips obtained wood material chipped