Mealey's (December 26, 2017, 3:17 PM EST) -- WASHINGTON, D.C. — A panel of the District of Columbia Circuit U.S. Court of Appeals on Dec. 22 remanded for further consideration the Occupational Safety and Health Administration’s rule regulating workplace exposure to silica because the initial rule was “arbitrary and capricious” (North America’s Building Trades Unions v. Occupational Safety & Health Administration, et al., No. 16-1105, D.C. Cir.; 2017 U.S. App. LEXIS 26315)....