A disease we thought was disappearing is making a devastating comeback. Coal miners in central Appalachia now face the highest black lung disease rates in a generation.
Black lung disease (once on a steady decline through the 1990s) has returned with alarming force.
Today, roughly 20% of coal miners in central Appalachia are diagnosed with the condition (especially those with 25+ years of experience).
What’s more troubling is that it’s no longer only a disease of long-tenured miners.
Younger workers with fewer years underground are now being diagnosed at rates that should alarm every employer, safety officer, and policymaker in the industry.
Here’s what’s changed in the industry, what the law requires, and what employers must do now.
Related: Black Lung Disease: Causes, Symptoms, Treatment, and Prevention.
Related: Understanding and Preventing Occupational Lung Diseases.
What Is Black Lung Disease and What’s Driving the Surge?
Black lung disease, clinically known as coal workers’ pneumoconiosis (CWP), is caused by the long-term inhalation of coal and silica dust.
These tiny particles embed in lung tissue, causing scarring that makes it progressively harder to breathe.
There are two forms of CWP:
- Simple CWP and the more severe, Progressive Massive Fibrosis (PMF) — which is incurable.
In a 2018 report, NIOSH confirmed that across just three clinics in central Appalachia, 416 miners had developed PMF, between January 1, 2013, and February 15, 2017.
However, a 2024 report updating the burden of PMF in these clinics identified 1,177 cases across 15 Black Lung Clinics in 11 states, with a staggering 86% of these cases concentrated in Central Appalachia.
So Why Is Black Lung Disease Surging Now?
Several factors are converging. Many unions in the Appalachian region have disbanded, leaving miners working longer hours with less rest between shifts.
Modern extraction machines are far more powerful than older equipment — they move more coal, faster, but they also throw significantly more dust into the air miners breathe every day.
On top of that, thinner coal seams are being mined today, which means cutting through more of the surrounding silica-rich rock — a particularly dangerous form of dust that accelerates disease progression. And breathing coal mine dust is the sole cause of black lung disease.
The Regulatory Timeline: From 2014 to the 2024 MSHA Silica Rule
Federal regulators haven’t been standing still, even if enforcement has been uneven.
In August 2014, the Mine Safety and Health Administration (MSHA) implemented a landmark respirable dust rule for coal miners — one that increased protections, tightened exposure limits, and closed loopholes that had allowed dangerous dust levels to go unreported.
By August 2016, Phase III of that rule went into effect, significantly lowering permissible coal mine dust concentration limits.
– See MSHA’s Final Coal Dust Rule (2014)
– See DOL/OSHA’s Respirable coal mine dust rule (2016)
The Biggest Update In Nearly a Decade
In April 2024, MSHA finalized a sweeping new silica dust rule that applies to both underground and surface mines. The rule cuts the permissible exposure limit (PEL) for respirable silica in half — from 100 micrograms per cubic meter of air down to 50 micrograms over an 8-hour shift.
It also establishes an “action level” of 25 micrograms, meaning operators must begin taking protective steps before workers even reach the legal limit.
The 2024 rule also introduces mandatory overexposure reporting to MSHA (something not included in the original proposed rule) and requires metal and nonmetal mine operators to establish medical surveillance programs for their workers, similar to protections coal miners have had for years.
It’s worth noting that implementation has faced some headwinds. MSHA announced delays citing NIOSH restructuring, and some Congressional efforts have sought to limit enforcement funding.
Employers should stay closely tuned to msha.gov for the latest compliance deadlines.
– See MSHA’s Final Rule on Respirable Crystalline Silica (2024)
NIOSH Screening: Disrupted, Restored, and What Miners Are Entitled To
One of the most important (and most underused) protections for coal miners is the free screening program run by NIOSH through its Coal Workers’ Health Surveillance Program (CWHSP). But in early 2025, that program hit a serious wall.
Federal workforce reductions led to NIOSH pausing new medical screenings and halting acceptance of the test results miners need to qualify for Part 90 transfer rights — the legal right to move to a lower-dust work area if early disease is detected. It was a significant blow to an already vulnerable workforce.
Following a court order mandating restoration of NIOSH’s Respiratory Health Division, the program was brought back online. By mid-2025, mobile screening units returned to the field, and the program declared itself fully operational again.
Here’s what miners are currently entitled to under federal law:
- Whena miner begins working underground, they must be offered a chest X-ray — either as part of a pre-placement physical or within six months of being hired.
- A second X-ray must be offered three years later. If that second exam shows evidence of pneumoconiosis, a third must be offered two years after that. For all active underground coal miners, a chest X-ray must be offered approximately every five years.
Early detection isn’t just a health issue — it’s a legal right.
When Employers Cheat: Enforcement Gaps and Real Consequences
Not every employer plays by the rules, and the consequences can last decades.
In one high-profile case, supervisors at a now-bankrupt Kentucky coal company instructed miners to leave dust monitors in areas with cleaner air, had workers avoid the mine face (where dust is heaviest) during sampling periods, and pressured miners not to wear monitors for full shifts.
Those falsified results were then submitted directly to MSHA.
When a whistleblower reported the cheating, a surprise MSHA inspection confirmed it. A federal grand jury indictment followed. The employee who reported it lost his job.
Advocates continue to warn that without strong enforcement, some operators will look for every opportunity to game the system.
The lesson is simple: cutting corners on dust monitoring doesn’t just carry legal risk. It condemns workers to a slow, suffocating disease with no cure.
Building a Compliant Program: Dust Monitoring, Medical Surveillance, and Getting Help
Compliance with today’s black lung and silica dust regulations isn’t optional — but it doesn’t have to be overwhelming.
A solid occupational health program starts with regular air sampling to monitor what your workers are actually breathing. When dust levels approach the action threshold, control measures (ventilation improvements, water suppression systems, equipment modifications) must go into effect immediately. Medical surveillance records need to be maintained accurately and accessibly, both for compliance and for early detection.
Working with a qualified medical surveillance partner makes all of this significantly easier. We are proud to be one of a select group of NIOSH-approved X-ray facilities in the United States.
Whether your team comes to one of our clinics in Pennsylvania, Maryland, or we bring our mobile units directly to your job site, we make the process as streamlined and non-disruptive as possible.
Key Takeaways
Black lung disease is not a relic of the past. It’s an active, growing crisis that demands action from every level of the mining industry.
The regulatory landscape has never been more demanding, with the 2024 MSHA silica rule raising the bar on what employers must monitor, report, and prevent. At the same time, NIOSH’s screening program (despite recent disruption) is back in operation and ready to serve the miners who need it most.
The tools to prevent this disease exist. What’s needed is the commitment to use them consistently and honestly. If you’re ready to build or strengthen your dust monitoring and medical surveillance program, contact Worksite Medical today.
Medical Surveillance and Monitoring With Worksite Medical
In most cases, OSHA requires medical surveillance testing, and at no cost to employees.
Worksite Medical makes that program easier with mobile medical testing.
We travel right to your workplace to conduct on-site respirator fit tests (including N95 masks), silica exam physicals, audiometric exams, OSHA and HIPAA compliant online respirator medical clearances, pulmonary function tests, heavy metal lab work, and much more, right on your job site.
We also keep accurate, easy-to-access medical records for your convenience. You’ll keep your employees at work, and stay ahead of OSHA & MSHA inspections.
With Worksite Medical, a mobile medical testing unit — we can bring all the resources of a lab to you. Our certified lab technicians can perform both qualitative and quantitative respirator tests to ensure a perfect fit.
You’ll keep your employees at work, and stay ahead of OSHA and MSHA inspections.
Protect your team and your workplace now with Worksite Medical. Not sure what you need? Try our medical testing wizard here.
Give us a call at 1-844-622-8633, or complete the form below to schedule an on-site visit or to get your free quote.
Create a Less Disruptive, More Productive Occupational Health Plan with Worksite Medical!
Are you looking for a way to keep your team safe, while also limiting risk and increasing production? Simplify your medical plan today. We help team leaders like you develop less disruptive, more convenient occupational health plans that comply with complex industry standards, thus creating a healthier, more productive workforce. Take control of your medical testing program, and make sure your team is within OSHA requirements.
