Wayne Palmer worked at the Mine Safety and Health Administration during Trump’s first term. Now he could return after working at an industry group that’s challenging the agency’s silica dust rules.

There are about 500,000 abandoned mines in the United States, according to the Mine Safety and Health Administration, and these long-forgotten facilities can pose a variety of risks to people ...

President Trump and his adviser, Elon Musk, have been working to winnow the ranks of federal workers. But how will the public lose out if government workers lose their jobs?