Researching the Coal Fields Without Losing Your Mind
Pennsylvania produced more anthracite and bituminous coal than any other state in the United States for well over a century. The records exist. They are scattered across multiple repositories, sometimes misfiled, sometimes legible, often contradictory if you trust the wrong source. I spent several years tracking mine accidents, land subsidence claims, and corporate ownership chains across the northern anthracite region and the southwestern bituminous fields. The main problem is not that the records are missing. It is that they are everywhere and nobody centralized them before digitization. The Pennsylvania Coal Mining History you find online tends to fall into two buckets: the romanticized account of company towns and the union wars, and the raw bureaucratic record of permits, accidents, and reclamation bonds. Most people want the first. If you are doing actual research, you will spend ninety percent of your time in the second category. That is where the real information lives. The Pennsylvania Department of Environmental Protection maintains the mine map archive, which is the single most important resource. It is a physical and digital collection of submitted mine maps from active and abandoned operations statewide. The digital portal has improved over the last few years, but navigating it without a plan will cost you several hours on a single county. My recommendation is to pull the PDF collection for your target county first through the DEP website rather than searching the interactive map tool. The PDFs tend to have better metadata attached to the scanned originals.
Where the Records Actually Live
Beyond the DEP, you need to know where else to look. The Pennsylvania State Archives in Harrisburg holds the records of the Bureau of Mines, which was the precursor agency before environmental oversight shifted to DEP. Those files include investigation reports from mine disasters going back to the late 1800s. The anthracite region accident records from the 1907 Centralia mine fire, the 1947 No. 6 colliery disaster, and the 1952 J.M. Colliery explosion are all documented there. The bituminous side has fewer catastrophes on record but a much messier paper trail because so many small operators never filed proper maps. The Library of Congress has some material, but the real trove is at the Pennsylvania Historical and Museum Commission and the various regional historical societies. The Anthracite Heritage Museum in Scranton holds personal papers, union documents, and company records that never made it into any government filing system. If you are researching a specific family or a particular mine, those collections matter more than the official state archives.
A Practical Workflow
Start with the mine location. Figure out the county, the township, and ideally the exact section line if you are working in the public land survey system used in Pennsylvania. The DEP mine map database lets you search by county and sometimes by name, but the name search is unreliable because the same mine was known by different operators at different times. I usually start with the county PDF set and cross-reference the mine names against the Pennsylvania Historical Survey Commission's historic mine listings. Once you have a mine identified, pull the original submitted map. These vary wildly in quality. Some are hand-drafted surveys on linen backing. Some are typed plat maps from the 1970s. A few are surprisingly detailed engineering drawings with timber patterns and ventilation routes. The age of the map matters more than the quality. Maps filed in the 1920s and earlier are often the most accurate because the surveyors actually walked the seam and measured by hand. Later maps, especially from the 1980s onward, were sometimes prepared by companies trying to minimize reported reserves or avoid reclamation liability. Then move to the accident and inspection records. The Bureau of Mines files are organized by year and county. Each file contains inspector reports, accident investigations, and correspondence. Reading through a year of inspection reports for a single county will give you a clearer picture of conditions than any secondary source. I found more about daily operations in three boxes of routine inspection reports than I did in twenty books on the anthracite industry.
Get the Full Details
For company records, check the Pennsylvania Corporate Records database at the Department of State. Many of the large operators like Lehigh Coal & Navigation Company, Delaware, Lackawanna and Western Railroad, and various reading Company affiliates have charters and annual reports that are publicly accessible. The smaller operators often dissolved or merged without clear documentation, which creates gaps that secondary sources try to fill with speculation.
A Specific Problem I Faced
I was researching a particular bituminous mine in Washington County for a subsidence liability case. The mine map in the DEP archive was labeled with the operator's name from 1963, but the actual workings shown on the map did not match any production records under that name. The mine had been sold twice in the intervening years, and the new operator had filed a revised map that referenced the old boundaries without updating the interior entries. I spent about six hours trying to reconcile the two maps before realizing the issue. The workaround was to pull the original deed records from the Washington County Recorder of Deeds. The chain of title showed the mineral rights had been severed from the surface rights in 1941 and resold in 1958. The 1963 map was filed by the second purchaser, who had only bought a portion of the original tract. The actual mine extent extended into the neighboring parcel, which was still under the original operator's name. Checking the earlier deed descriptions against the later map coordinates resolved the discrepancy. This kind of title chain problem shows up more often than you would expect in Pennsylvania because the coal region has some of the most complex mineral estate divisions in the country.
Counter-Intuitive Things You Should Know
One thing beginners get wrong is assuming that anthracite records are better preserved than bituminous records. The opposite is generally true. The anthracite region had large corporate operators with professional surveying departments that maintained their own files. When those companies collapsed or were absorbed, their records often went with them or ended up in corporate archives that are difficult to access. The bituminous region was dominated by smaller operators who filed their maps with the state as a legal requirement and then forgot about them. The state kept those files. So the apparently less important bituminous records are often easier to work with today. Another misconception is that accident records are comprehensive. They are not. The reporting requirements changed multiple times over the decades. Pre-1910 accidents, especially among immigrant labor crews, were frequently underreported. Company doctors treated injuries on site without filing state reports. The official death tolls for many anthracite mines in the 1880s and 1890s are almost certainly too low. Cross-referencing with newspaper archives from the period, particularly the Scranton Times, the Johnstown Tribune-Democrat, and the Pittsburgh Press, will often surface accidents that never appeared in the official record.
Resources You Can Access
The DEP mine map database is free and available at the department website. You do not need an appointment or special permission. The state archives require a research visit to Harrisburg unless you hire a researcher, though some finding aids are available online. The Anthracite Heritage Museum accepts research requests by email and has staff who can pull specific collections. Local historical societies in the individual coal regions are often the most helpful because they maintain genealogical and oral history collections that nobody else has. For digitized newspapers, the Pennsylvania Newspaper Archive through the state library system is useful. The Library of Congress Chronicling America project also has some relevant titles. The Penn State University Libraries have a digital collection of Pennsylvania mining photographs and some map scans that are freely accessible.
What This Approach Cannot Do
Some records simply do not exist. Small strip mines from the 1960s and 1970s in the bituminous region were often not mapped with any precision. Operators cut corners on reclamation bonding and filed rough sketches or no maps at all. If you are researching a specific site from that era, you may find nothing in the state archives. In those cases, the best alternative is aerial photography. The USDA Farm Service Agency has a photographic archive going back to the late 1930s, and the state geologic survey has some aerial survey data from the mid-twentieth century. Subsidence features are often visible in the imagery even when the mine records are absent. The other limitation is that Pennsylvania coal mining history is not just a historical question. It is a legal one. Reclamation bonds, perpetual treatment obligations for acid mine drainage, and liability for ongoing subsidence all depend on accurate record-keeping. Many of the disputes I encountered were not about what happened historically but about which party was responsible for remediation decades after the fact. The records you find will matter to someone filing a claim in environmental court, so treat the sources with the same skepticism you would apply to any legal document.
