Original vintage mining magazine ad, CURTIN-HOWE CORPORATION of New York City, NY. The Keystone Wood Preserving Company of Philadelphia, PA. uses Zinc Meta-Arsenite as a wood preservative for mine timbers. The Western Union Telegraph Company uses Zinc Meta-Arsenite for the treatment of poles. Old 1928 mining industry advertisement. Approximate page size 9 x 12 inches.
- SKU o419
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