Home / General / This Day in Labor History: December 19, 1907

This Day in Labor History: December 19, 1907



On December 19, 1907, the Darr Mine near Smithton, Pennsylvania, caught fire and exploded. 239 people died, many of them children. This was the largest workplace disaster in Pennsylvania history.

The Darr mine, located southeast of Pittsburgh, was typical of the Appalachian mining country during the early twentieth century. The workforce was a polyglot group of workers from around Europe. While native born Americans made up a percentage of the workforce, many were from Europe, particularly from what are today Greece, Poland, Germany, Austria, Hungary, and Italy. Smithton was a small town that developed around coal mining and related industries like coking. The workers there faced similar terrible conditions to miners around the region. Long days meant that workers only saw the light most of the year on Sundays. Pay was low and workers had little control over their lives

About 400 workers labored in the Darr mine under unsafe working conditions that put workers lives at risk every day. As this series has explored in detail, coal mining was an incredibly dangerous profession. A mere few days earlier, the nearby Naomi mine had exploded, killing 34 workers. Many of the unemployed workers from that mine quickly found jobs at the Darr, unfortunately as it turned out.

At about 11:30 a.m. on December 19, 1907, the Darr mine exploded. It absolutely destroyed everything and everyone in the mine. The report of the Pennsylvania Department of Mines in the aftermath noted, “Persons in the vicinity of the mine describe the explosion as an awful rumbling followed by a loud report and a concussion that shook the nearby buildings and was felt within a radius of several miles…. The explosion had been so terrific in its force that the inspectors were convinced upon a superficial investigation that it would be impossible for any of the entombed workers to be rescued alive.”

The official cause of the explosion was that miners had entered a location that the fire marshal had cordoned off the previous day while carrying open lamps. In fact, it’s hard to know just what happened. But in any case, 239 miners died, the worst mining disaster in Pennsylvania history. The only reason more workers did not die was that the Greek miners took the day off to celebrate the Feast of St. Nicholas. Otherwise, the death toll likely would have cleared 400. Over half the dead were native English speakers, an unusual occurrence during this period, more typical of 19th century mines, although again, this is in part because the sizable population of Greeks had all taken the day off. Town residents rushed to the mine, but there was not much they could do except dig out the bodies, a process that took days. One worker survived, a miner named Joseph Mapleton who was near the entrance. He had only minor injuries and took place in the failed rescue attempt that followed.

Of course, many challenged blaming the miners for the explosion. Some blamed the lack of inspections, others the general lack of safety and specifically the lack of ventilation. One theory was an accidental dynamite blast. But in any case, the fundamental reason was that early 20th century mine owners simply did not care about workplace safety. Nor did they have any reason to as they rarely if ever suffered any meaningful consequences if workers died on the job. This was the Gilded Age after all and employers could do almost anything they wanted to their employees. Wage slaves indeed. The coal company did ban the head lamps in the mine. But they were not held liable for the deaths. In fact, nothing meaningful happened because of these deaths. Critics of mine safety did issue a report that was deeply critical of the lack of ventilation in the mine, as well as most mines throughout the bituminous country, but again, nothing concrete came of it. Later experimentation showed high levels of damp in the mine, even after the explosion.


The temporary morgue for the dead miners

As was so typical of the many coal mining disasters of this period, a couple of hundred dead workers didn’t change many hearts, even as it slowly led to reforms. Rural Pennsylvania was far away from centers of power and wealthy people didn’t much care about people they couldn’t see. It would take Triangle to start getting Americans to take workplace safety seriously, but it would take a whole lot more than that to create even moderately effectively regulations for coal mine safety. Even in the very recent past, negligent employers such as Don Blankenship have murdered workers.

The Darr fire was simply one incident in the deadliest month in U.S. mining history. In December 1907, over 3000 miners died on the job. Darr was only the second largest single incident, as over 300 miners died in the Monongah mine in West Virginia on December 6. Many more died in ones and twos and by the dozens, thousands of workers in one industry perished in one terrible month.

Ultimately, this region of Pennsylvania would see many of the worst events in American labor history, from the Homestead strike outside of Pittsburgh to the Donora Smog of 1947, where U.S. Steel murdered people through pollution a mere 15 miles west of the Darr mine site.

This is the 202nd post in this series. Previous posts are archived here.

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  • Ramon A. Clef

    It’s been said before, but I’ll say it again–I would love to have a book collecting all of these posts.

    • Brett

      He only needs to do 163 more of these, and he’ll have a book. A Year in Labor History, or a better title.

  • BiloSagdiyev

    Why, it’s almost as if there’s something worse than “job killing regulations.”

    These immigrants were just doing the jobs Americans didn’t want to die at.

  • Jackson87

    It should be drilled into people’s heads that conservatives opposed safety regulations. Every.Step.Of.The.Way.
    And will roll them back to the best of their ability.

    • BiloSagdiyev

      And have been rolling them back for decades.

  • “Later experimentation showed high levels of damp in the mine …” This is firedamp, i.e. methane.

    • BiloSagdiyev

      Thank you. I spent the morning wondering if water was helping rock layers slide about. Probably because I watched a Norwegian disaster movie on Netflix the other night, whose main character was a geologist.


      (Uh, I’m not Norwegian or a geologist. Changes in water table were part of the buildup to the calamity.)

  • DrDick

    Yet another testament to the benevolence and care of our plutocratic overlords, Cthulhu bless their souls.

  • Bitter Scribe

    Instead of mines, today’s immigrants have minimum-wage fast-food jobs and Uber cars. Progress. At least they don’t die on the job.

    (Except for when they do.)

    • Bruce Vail

      The Bureau of Labor Statistics just came out with their annual deaths-on-the-job report. The number for 2015 comes in at 4,836.


      This is way too high, and there has been basically no improvement in the 7 years of the Obama administration. This is such a low priority for our government, Republican or Democrat, that most people don’t even consider it an issue.

  • Mike G

    Early 20th 21st century mine owners simply did not care about workplace safety. Nor did they have any reason to as they rarely if ever suffered any meaningful consequences if workers died on the job.

    Fixed it for you.

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