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Foresl Residue Uses Foreseen

Wood products makers are beginning to look deeper into the forest. bel.ond the tall pines and firs they have been milling into lumber.

Forest residualssmaller trees cut to thin out timber stands and bark from the big trees-are beginning to look more attractive, says Dr. Fred E. Dickinson, director of the University of California Forest Products Laboratory.

He told a field day audience recently that commercial use of lower-value forest materials is coming closer. He cited three new pulp mills being built in northern

California as potential {uture users of sawmill wastes.

The UC forest scientist suggested that the proof of forestry practices now being developed for second-growth timber stands would be in the manufactured products that come from them.

Thinning maturing timber stands can be a major source of chips for pulp and other wood products uses, said Dr. Rudolph F. Grah, UC professor of forestry at Berkeley. Grah said a stand of trees mieht be thinned by half at about the 30th year oI its srowth.

"The half of the stems left to grow," he said. o'would make as much wood as all

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the trees could if left uncut. Trees would be of larger diameter, and total production by the time the whole stand had reached 50 or 60 years of age would be boosted by as much as a third."

The University of California's Blodgett Forest was pointed out as a prime example of the success of Cali{ornia's Sierra slopes in rebuilding their own timber cover. The forest rvas last logged about 1913 by the Michigan-California Lumber Company, which gave the experimental tract of about 3,000 acres to the University. Now, 50 years later, the forest has a heavy mixed conifer stand of ponderosa and sugar pine, white and Douglas fir, and incense cedar.

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Hildebrond

to Big Horn Gypsum

Edward L. Hildebrand has been elected president of Big Horn Gypsum Co., a subsidiary of The Celotex Corporation, according to James W. Walter, Celotex chairman. Hildebrand succeeds Sid H. Eliason, founder of Big Horn, who died recently. Hildebrand had been executive vice president of Big Horn since the company's founding in 1959. He was formerly financial vice president of Consumers Co., Chicago, and vice president of Western Gypsum Co. He has been active in the gypsum industry. for 26 years in executive and sales positions.

The Big Horn company, with headquar[ers in Salt Lake 'City, operates a gypsum board manufacturing plant in CodS Wyoming and markets its gypsum products in the western half of the U.S. 'Celotex acguired the company in July, 1963.

New Mill fior Mtrmmoth Area

A division of General Supply Company has set-up a portable mill operation in the Mammoth, Calif. area, according to Fred Millman of the Los Angeles based firm. The mill, which began operation in late Augusto handles production of both private and forest service timbers.