The final RMP rule amendments have encountered extreme resistance since EPA first issued them in mid-January. ACA and the other trade associations maintained that the final RMP rule not only imposes significant new costs without identifying or quantifying the safety benefits that will be achieved through these new requirements; but that it may compromise the security of facilities, emergency responders, and communities.
Occupational exposure to airborne respirable silica particles has been associated with work in mining, quarrying, tunneling, construction, sandblasting, masonry, foundry operations, glass manufacture, ceramic and pottery production, and cement and concrete production and with work with certain materials in dental laboratories (2).
This was after they excluded other conditions that could produce the disturbance of cognitive function such as any history of cardiovascular disease, respiratory disease, neuropsychological disease, head injury, diabetes, cancer, alcohol addiction, and anyone who smoked more than 10 cigarettes per day.
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The decision was the result of several lawsuits consolidated into a multi-district case, including suits brought against EPA challenging the rule by Georgia, West Virginia, Alabama, Florida, Kansas, Kentucky, South Carolina, Utah, Wisconsin, Oklahoma, Ohio, Michigan, Texas, Louisiana and Mississippi, as well as the U.S. Chamber of Commerce, the American Farm Bureau Federation, and the American Petroleum Institute.