Every mine under U.S. Mine Safety and Health Administration jurisdiction since 1970 (91,776 mines) + every reported accident/injury/fatality since 2000 (272,784 accidents, 1,201 fatalities). Names the operator, controller (parent), mine name, location, commodity, and for accidents: degree of injury, classification, occupation, narrative. The fatality data is the public record of who died at which mine — paired with controller_name it shows which corporate parents kill workers. Source is pipe-delimited ZIPs at arlweb.msha.gov, weekly-refreshed. Hard to use because the columns aren't documented in the page itself and the ZIP files require browser-style headers to download.
Every record in this dataset can be traced back to its primary source at https://arlweb.msha.gov/OpenGovernmentData/OGIMSHA.asp. Underlying content is a US federal government work (public domain under 17 USC §105); our derived data is licensed CC0 1.0.