A new rule to better protect miners from silica dust was set to take effect this week. Instead it has been delayed indefinitely.
The Mine Safety and Health Administration (MSHA) of the U.S. Department of Labor announced Monday that due to a judicial order, their 2024 silica rule will not be enforced until a lawsuit is resolved.
The 2024 rule halves the amount of airborne crystalline silica — that’s crushed rock particles that are easily inhaled — that workers can be exposed to. It is the first update to silica standards in more than 50 years; the previous standards were established in the early 1970s.
Silica dust is a leading cause of serious respiratory issues like black lung, a condition that has seen a steady rise in younger and younger mine workers in recent years.
The lawsuit, filed by kitty litter industry group Sorptive Minerals Institute, has been further delayed by the U.S. Department of Labor’s continued requests that the case be temporarily suspended for 60-day periods.
The most recent of such requests was made April 6.
The Trump administration has rolled back the federal government’s support for renewables and implemented policies favorable to fossil fuels, including coal. President Donald Trump signed an executive order in 2025 to boost coal production, and the administration has pledged to spend $625 million to keep coal-fired power plants in operation.
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