The silica rule was delayed in April after industry groups suing the government filed an emergency request in court to block it from taking effect, citing costs and difficulties implementing it. Around the same time, the US administration told nearly all employees at the National Institute for Occupational Safety and Health that their jobs were being cut. That included those running a congressionally mandated surveillance program that certifies black lung cases.

In addition, the Labor Department has proposed altering some mining regulations to weaken the authority of district mine health and safety managers that could impact ventilation, roof prevention and training programs.