WASHINGTON, Dec. 20 -- The U.S. Department of Labor Mine Safety and Health Administration issued the following news release: * * * Inspections resulted in 52 significant, substantial and 6 unwarrantable failure findings * * * The U.S. Department of Labor announced today that its Mine Safety and Health Administration completed impact inspections at 14 mines in 10 states in November 2023, issuing 184 violations and one safeguard. The agency began impact inspections after an April 2010 explosi more PR