Congressional serial set Volume 5485

 
9781130933062: Congressional serial set Volume 5485

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1910 Excerpt: ...Valley, which extends 30 miles in length and 4 to 6 miles in breadth. The smelter roasts daily from 8,000 to 10,000 tons of ore which is quite rich in arsenic. The dense volume of smoke containing smelter fumes and flue dust rises high under favorable atmospheric conditions and can be traced for over 16 miles as a continuous cloud to its origin, the huge smokestack, 300 feet high and 30 feet wide at the orifice. Prevailing aerial currents direct the course of the smoke to various parts of the valley, the foothills, and mountains. The great heat at which the fumes and flue dust are generated, aided by the forced draft, is responsible for the excessive velocity of the contaminating particles, which, after cooling in the air, are precipitated and deposited not only on the grasses of the valley, but also on the vegetation of the foothills and the foliage of the surrounding forests. The emanations of flue dust from the smelter contain from 22 to 30 tons of arsenic every twenty-four hours. 2. Damage to grasses and forests can be detected even by an untrained casual observer, and thorough investigation by expert foresters and chemists has proved the existence of extensive damage. The soil, when irrigated by water that is contaminated by the waste products of the smelter which reach some of the streams, suffers deterioration of its fertility, as is shown by the-diminution of the crops. 3. The chemical analyses of the grasses, hay, and soil by Dr. J. K. Haywood and by Professors Harkins and Swain show the presence of a considerable amount of arsenic. According to Harkins and Swain, arsenic is found not only in the above-mentioned substances, but also in the hair, stomach, intestines, liver, pancreas, spleen, brain, spinal cord, thyroid gland, muscles, lungs, bones, ...

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