File:The Forest products laboratory - a decennial record, 1910-1920 (1921) (14782321334).jpg

Identifier: forestproductsla00weisuoft (find matches)
Title: The Forest products laboratory : a decennial record, 1910-1920
Year: 1921 (1920s)
Authors: Weiss, Howard F Forest Products Laboratory (U.S.)
Subjects: Forest Products Laboratory (U.S.) Wood
Publisher: Madison, Wis. : Democrat printing company
Contributing Library: Gerstein - University of Toronto
Digitizing Sponsor: University of Toronto

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- the alkali process lend themselvesvery readily to recovery of various products prior to pulping. So far,however, tannin is the only product which is now recovered on a com-mercial scale, but the high rosin and turpentine content of the southernpines suggest that before long these materials will also be recovered.This problem can be very successfully attacked upon a laboratoryscale and has already been too long delayed. There are but few quarries in this country where a successfulgrade of stone for pulp grinders is found, and the cost of the worknecessary to experiment with new deposits is practically prohibitiveunless the investigations can be first carried out upon a laboratory
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A DklKxxiat. Kkcokd 149 scale. Closely connected with tliis proljleiii is that of developing asuitable artificial stone, and wliile many abrasive materials have beensuggested, and some tried, tlie problem is not as yet solved. But hereagain the laboratory can be of great assistance. The importance of keeping under control the production of me-chanical pulp is receiving increasing attention, and a number of yearsago was the subject of some study. Since that time, however, no op-portunity has been presented for the laboratory to continue this Mork,although mill organizations are carrying on investigations along thisline. The loss of fibre in Whitewater has ))een the subject of muchdiscussion in the past, both from the standpoint of stream pollutionand improving plant conditions. Because of the large volume of waterMhicli must be handled in order to recover tlie relatively small amountof fiber, certain difficulties present themselves at the start. But prog-ress has certainly been made in

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