# Black lung disease rise in Appalachian coal miners

> Live situation record from CLSTR: https://clstr.news/situations/black-lung-disease-rise-in-appalachian-coal-miners
> Updated: 2026-08-20T17:39:41.000Z. Sources: 6. Developments: 2.

Data from the National Institute for Occupational Safety and Health (NIOSH) indicates a significant resurgence of coal workers’ pneumoconiosis, or black lung disease, among veteran underground coal miners in central Appalachia, specifically in Kentucky, Virginia, and West Virginia.

Recent findings show that 32.5% of miners with at least 25 years of service tested positive for the condition, marking the highest rate recorded since 1978. This represents a substantial increase from a low of approximately 7% in 1999. Notably, elevated disease rates have also been observed in miners with as little as 15 years of underground experience.

Experts attribute this rise to increased exposure to respirable crystalline silica. As easily accessible coal deposits are exhausted, mining operations have shifted to thinner seams that require cutting through quartz-rich rock, releasing fine silica particles. This exposure is reportedly causing miners to fall ill more rapidly and severely than in previous decades.

In response to these trends, labor unions and coal miner advocates are demanding federal intervention. The United Mine Workers of America (UMWA) has called on the Mine Safety and Health Administration (MSHA) to end an indefinite hold on a 2024 regulation. This rule was designed to halve the permissible exposure limit for silica dust and mandate medical surveillance, but its enforcement has been delayed by legal challenges from the mining industry.

## Claims

- Approximately 32.5% of coal miners in Kentucky, Virginia, and West Virginia with 25 or more years of experience have black lung disease. (corroborated by 6 sources)
- Black lung disease rates in the Appalachian region are at their highest levels since the 1970s. (corroborated by 4 sources)
- Increased exposure to silica, caused by mining deeper into rock to reach remaining coal, is driving the resurgence of the disease. (corroborated by 4 sources)
- The United Mine Workers of America (UMWA) is demanding that the Mine Safety and Health Administration (MSHA) reinstate enforcement of a 2024 silica dust regulation. (corroborated by 2 sources)
- A 2024 MSHA rule aimed to reduce the permissible exposure limit for respirable crystalline silica by half, but enforcement is currently on hold due to legal challenges. (corroborated by 2 sources)

## Timeline

### 2026-08-20: Black lung disease rates rise among Appalachian coal miners

Black lung disease rates in the Appalachian coal mining region have reached their highest levels since the 1970s, driven by increased silica dust exposure. Unions are demanding federal enforcement of safety.

6 sources. https://clstr.news/cluster/appalachian-coal-miners-face-rising-black-lung-disease-rates

### 2026-08-07: Black Lung Disease Rates Surge Among Appalachian Miners

NIOSH data reveal a 32.5% black‑lung rate among veteran Appalachian miners – the highest since 1978 – driven by increased silica exposure from thinner seam mining.

2 sources. https://clstr.news/cluster/black-lung-disease-rates-surge-among-appalachian-miners

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Cite as: Black lung disease rise in Appalachian coal miners. CLSTR, https://clstr.news/situations/black-lung-disease-rise-in-appalachian-coal-miners