Notes On the Proposed Introduction of the French System of Treating Poles By the
The book Notes On the Proposed Introduction of the French System of Treating Poles By the was written by author O T Swan Here you can read free online of Notes On the Proposed Introduction of the French System of Treating Poles By the book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Notes On the Proposed Introduction of the French System of Treating Poles By the a good or bad book?
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-. ; ra>- . , . -. . ; . , i9i* as log 2>ni c l - "' - ; ' . I lioa JH;J l . Tr, ni oi . . : q eii* 'ii ' - ' ^9 . JnocttfiT. T t"-: . Od oJ- .^^ elroa //;. - -SI- French officials state that they find the aver- age life of their poles treated v/ith "this preservative t . T about 18 years in soil adapted to the treatment. The average life secured in Germany, as shown elsewhere in this report, is 11. 7 years. But this figure averages all conditions and grades of copper sulphate treatment. It is ...well understood that poles treated with zinc chloride should not be set in swamps "but other and analogous conditions in the soil especially detri- mental to copper sulphate have in many cases "been disregarded. The following statement shows the average life of poles in 30 representative lines in France under poor, medium, and good condition, and the character of the soil in which an "be dKld&ftti "in lotsof they were placed: g tubes of sol -13- .. _ . ' . ". '. ----- . ... . . 1 9 3^ . -. ;: ; .
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