Largest steel chain ever made in Canada now in service: Mining and Metallurgy, Vol. 24, No. 437.
✍ Scribed by R.H.O.
- Book ID
- 104133551
- Publisher
- Elsevier Science
- Year
- 1943
- Tongue
- English
- Weight
- 117 KB
- Volume
- 236
- Category
- Article
- ISSN
- 0016-0032
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✦ Synopsis
Termite
Research.--Research for the last 30 years--particularly since I939--has enabled the Department of Agriculture's Research Administration to assist in developing and applying measures to protect buildings in military cantonments and in Federal housing projects against termites--among the worst insects hampering this country's war effort. Suggested improvements in plans for these projects include provision for adequate ventilation and clearance of wood debris beneath buildings. These measures have largely superseded the metal shields formerly used to protect buildings from termite damage. At the request of military authorities, Department entomologists also are seeking measures to prevent termite damage to military buildings and supplies in tropical and subtropical lands. Under way is a study to determine which of the many tropical woods are most resistant to termite attack. As facilities are not available for treating these woods with preservative chemicals in the areas where they are needed for construction, it is most important that the wood to be cut and used locally without treatment should have as much natural durability as possible. Research has shown that the life of most untreated woods used in contact with the soil, such as in temporary buildings and bridges, can be prolonged by poisoning the adjacent soil. Tests are in progress to determinewhichchemicalsdo this job best under tropical conditions. Creosote, pentachlorophenol, and some of the arsenical compounds are effective for the purpose in the United States. Department entomologists believe that tents, tarpaulins, clothing, and other materials that must be stored or used where they are subject to damage from termites, especially in the tropics, can be protected by chemical treatments at the time of their manufacture or use. Resuits of limited tests--the only ones yet made--indicate that some of the chemicals that prevent mildewing and decayof many fabrics may also prevent termite damage.
R. H. O. Largest Steel Chain Ever Made in Canada Now in Service.--(Mining and Metallurgy, Vol. 24, No. 437.) This was made by Sorel Steel Foundries Ltd. for use on a marine railway in a new ship building plant. This plant, situated on a comparatively narrow river, builds Io,ooo ton ships which are winched into place on the launching platform of the railroad; the railroad is then slowly lO7