Back in 1969, John Harkin, a chemist at the U.S. Forest Services Forest Products Laboratory in Madison, Wisconsin, wrote a report titled "Uses for sawdust, shavings, and waste chips." Mis research—at a lime when environmental concerns about burning were being raised—turned up nearly three dozen categories of uses and dozens more specific applications within them. His purpose was industrial; he calculated that a sawmill cutting 1.000 board feet of 1 "-thick hardwood with a saw having a 1/4" kerf produced 1,085 pounds of sawdust. And lots of sawmills had annual production in millions of board feet!
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