CharlestonBlack lung is resurging across Appalachian coalfields as the US administration directs hundreds of millions into coal projects.
Industry lobbying has stalled federal silica-dust rules that would cut miners’ exposure to the disease’s main driver.
The rule has no confirmed effective date; miners face rising exposure.
Sources: Undark
THE DISEASE
Black lung — coal workers' pneumoconiosis — is caused by inhaled dust scarring the alveoli until they can no longer transfer oxygen. It is irreversible, progressive, and untreatable except by lung transplant. The miner suffocates over years, not minutes.
WHY IT CAME BACK
Black lung rates fell after the 1969 Coal Mine Health and Safety Act set dust limits and created the Black Lung Benefits program. Then they reversed. By the 2010s, NIOSH was finding PMF rates in central Appalachia higher than at any point since modern surveillance began.
THE SILICA TWIST
As accessible coal seams thinned, miners began cutting through more sandstone rock to reach thin coal. Sandstone is mostly quartz — crystalline silica. Silica dust is roughly 20 times more toxic to lung tissue than coal dust, which is why young miners now get severe disease in a decade rather than thirty years.
THE RULE
MSHA's silica rule, finalized in April 2024, would cut the permissible exposure limit from 100 to 50 micrograms per cubic meter — matching the OSHA limit other industries have followed since 2016. Industry litigation and stays have kept it from taking effect.
WHO PAYS WHEN MINERS GET SICK
The Black Lung Disability Trust Fund pays benefits when the responsible operator is bankrupt or unidentified. It is funded by an excise tax on coal sales — a tax Congress has repeatedly let lapse and lower. The fund has been billions of dollars in deficit for years; taxpayers ultimately backstop the shortfall.
THE GEOGRAPHY
The resurgence is concentrated in central Appalachia — southern West Virginia, eastern Kentucky, southwestern Virginia — where seams are thinnest and rock-cutting is heaviest. NIOSH black lung clinics in these counties report PMF rates not seen since the 1950s.