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Title: Mercury Contamination In Fleet Vehicles
Author: Robert B. Codling
Source: American Gas Association 1976
Year Published: 1976
Abstract: Mercury is among the first metals discovered by man. It is a mobile, lustrous, silvery-white liquid slightly heavier than lead and is especially dangerous because it vaporizes at temperatures as low as 10 Fahrenheit. This means that the colorless, odorless vapor may be preseni anywhere mercury is used or stored. When spilled, liquid mercury breaks up into droplets that may continue to break up when subjected to external forces until the droplets cannot be seen by the naked eye. Mercury can enter the body through the lungs, the skin and the digestive system but the breathing of the vapor is the most common cause of mercury poisoning. Chronic mercury poisoning is caused by exposure to a low concentration over an extended period. Definite symptoms may not appear until after exposure of six months or more. Persons developing chronic mercurialism may become irritable, excitable, or excessively timid. They are likely to complain of headaches, drowsiness, insomnia and weakness, and to have difficulty in getting along with other people. Many cases show sore mouths and an excessive secretion of saliva, excessive perspiration, and a great readiness to blush. Tremors also develop and will be noticed very readily by the shakey appearance of the handwriting.

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