To make silk, the silk worm reduces the cellulose in mulberry leaves to a protein liquid which it spins into a cocoon. Result of man’s learning to imitate this technique is the 45-year-old rayon ...
1955: Preliminary investigation begins into site for a pulp mill in Missoula area that would employ 600 people. Oct. 21, 1956: Waldorf Paper Products Co. of St. Paul, Minn., announces it will start ...
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