Federal surveillance data published this week show that black lung disease among veteran underground coal miners in central Appalachia has reached its highest recorded level since 1978, a finding that lands in Kentucky, Virginia and West Virginia coalfield communities where the disease was supposed to be disappearing.
Researchers at the National Institute for Occupational Safety and Health reported in a peer-reviewed research letter in a respiratory medicine journal that 32.5 percent of miners with at least 25 years underground in those three states tested positive for coal workers' pneumoconiosis on X-rays conducted over the last five years, roughly one in three. The last time the rate was that high for miners with the same work history was 1978, and when NIOSH last reported the rate in 2018, it was 20.6 percent. The current estimate is more than a fourfold increase over the low point of about 7 percent recorded in 1999.
For coalfield families, the number describes a household reality rather than an abstraction: a breadwinner who may lose the ability to work, a spouse who becomes a caregiver, and a benefits claim that has to be filed and defended. The findings also show elevated rates among miners with as few as 15 years underground, levels not seen in nearly 40 years.
What the Surveillance Data Can and Cannot Show
This limitation belongs early rather than buried at the end. The published letter does not report how many miners were tested. In response to questions from reporters, NIOSH said it screened 280 working veteran underground miners in central Appalachia over the past five years, with 91 testing positive, then used that sample to estimate a rate for all similar miners in the region. That extrapolation method has been used since 1974, and an independent occupational lung specialist who reviewed a draft at reporters' request called the overall process valid.
Still, surveillance of this kind documents regional trends in a screened population. It does not establish causation in any individual worker; participation in NIOSH screening is voluntary, and the sample is small enough that the regional estimate carries meaningful uncertainty.
Silica Dust and a More Aggressive Form of the Disease
The disease is no longer driven by coal dust alone. As the thickest coal seams in Appalachia have been mined out, companies have turned to thinner seams, which requires cutting through surrounding rock that typically contains quartz. That generates respirable crystalline silica alongside coal dust.
Silica is far more damaging to lung tissue than coal dust, and it drives fibrosis that progressively stiffens the lungs. The NIOSH letter states that excessive inhalation of coal mine dust is the sole cause of black lung in coal miners, and that substantial evidence shows the respirable crystalline silica component plays an important role in contemporary disease patterns.
The lead author was blunt about what the data imply for the years ahead. Scott Laney, a NIOSH research epidemiologist, said "I'm disgusted" and warned that the situation will not improve because of the disease already in the pipeline.
The mining industry disputes the regulatory implication rather than the numbers. The National Mining Association, which was given a summary of the findings, said the cases NIOSH counted reflect exposures dating back years and, in many cases, decades, and therefore do not describe conditions, practices, or protections in mines today.
Coalfield Counties Carrying the Heaviest Burden
The heaviest concentration sits in central Appalachia, spanning eastern Kentucky, southwestern Virginia and southern West Virginia. Clinics in the region see a population NIOSH largely does not: retired and laid-off miners seeking lung exams while pursuing state or federal benefits.
Clinic volume tells the same story as the surveillance data. According to reporting by Public Health Watch and its partners, Stone Mountain Health Services in southwestern Virginia, which diagnoses more cases than any clinic in the country, has recorded 2,400 new black lung diagnoses in the past five years alone.
The mortality picture is already documented. More than 1,700 coal miners died from black lung between 2020 and 2023, according to an earlier NIOSH study. Those deaths reflect exposures that occurred years earlier, which is the core of the pipeline problem researchers describe.
A Federal Silica Rule Still Not Being Enforced
The regulatory backdrop is central to why researchers expect the numbers to worsen. In 2024, the Mine Safety and Health Administration issued a new silica dust rule for mining that cut the permissible exposure limit by half and, for the first time, created a direct regulatory response to overexposure.
The mining industry sued, accepting the tougher limit but challenging the enforcement mechanism. Federal courts responded with an indefinite delay in enforcement, and the current administration did not oppose the delay, announcing it would also put enforcement on hold. Reporters provided MSHA a summary of the new findings, but the agency declined to comment or respond to questions before seeing the published report. That leaves an open question rather than a settled dispute.
Clinicians and former regulators who work with these patients have been direct. Dr. Drew Harris, a University of Virginia pulmonologist and medical director at the Stone Mountain clinics, said protections known to work need to be enforced. Celeste Monforton, a former federal mine safety regulator and workplace safety academic, said the findings should stagger and shock anyone with compassion for hardworking people.
Respirators are not a substitute for dust control. MSHA noted in the 2024 rule that powered air helmets are not a permanent solution because they can make communication difficult and may limit peripheral vision and situational awareness.
Screening, Benefits and Where Miners Can Get Checked
The disease is incurable and progressive, which makes early detection about slowing damage and preserving eligibility for benefits rather than reversing injury. Miners who notice a persistent cough, worsening breathlessness on exertion, chest tightness or reduced exercise tolerance should seek pulmonary evaluation rather than attributing symptoms to age or smoking history.
Working underground miners are entitled to periodic chest X-ray screening at no cost through the federal Coal Workers' Health Surveillance Program. Former miners who never enrolled, or who left the industry decades ago, can still be evaluated. Black lung clinics across Kentucky, Virginia and West Virginia provide testing, treatment and assistance with federal benefits claims, and those clinics are typically the fastest route for a miner who does not have a pulmonologist.
Families should also know that benefits claims are frequently contested. Keeping employment records, work histories, prior X-ray reports, and pulmonary function results in one place before filing makes a claim easier to substantiate. More than 26,000 miners or surviving dependents drew benefits from the federal black lung trust fund in 2024, according to a Labor Department report to Congress.
Symptoms that warrant urgent care rather than a routine appointment include sudden severe shortness of breath, chest pain, coughing up blood, or bluish lips or fingertips.
The next thing to watch is the status of the silica rule and whether federal enforcement resumes, along with any response from MSHA now that the research letter has been published. MedicalDaily will report those developments as they occur.
The bottom line: the newest confirmed finding is that roughly one in three screened veteran central Appalachian miners now shows evidence of black lung, the population most affected is working and retired underground miners in three states, and the most useful step for those families is getting screened and documenting work history while the regulatory question remains unresolved.
Frequently Asked Questions
What did the new federal data find? NIOSH researchers reported that 32.5 percent of central Appalachian underground coal miners with at least 25 years of experience tested positive for black lung on X-rays over the past five years, the highest rate since 1978.
How many miners were actually tested? NIOSH told reporters it screened 280 working veteran underground miners in the region over five years, with 91 testing positive, and used that sample to estimate a regional rate.
Which states are most affected? Kentucky, Virginia, and West Virginia, where the surveillance data show the highest rates.
Why is the disease getting worse if coal mining has declined? Miners increasingly cut through rock to reach thinner seams, generating respirable crystalline silica, which damages lung tissue more aggressively than coal dust alone.
Does this study prove silica caused any individual miner's illness? No. Surveillance data document population trends. They do not establish causation in a specific worker.
Where can current and former miners get tested? Working underground miners can receive free periodic chest X-rays through the federal Coal Workers' Health Surveillance Program. Black lung clinics across the region test former miners and help with benefits claims.
Is black lung treatable? It is incurable and progressive. Treatment focuses on managing symptoms, slowing decline, pulmonary rehabilitation and, in advanced cases, evaluation for transplant.
