Federal Workers in Limestone Mine Bash Elon Musk's Claims About How They Handle Documents: Not TrueThere's No Elevator'Elon Musk's claims about retirement processing efficiency in a limestone mine were contested by federal workers.
Giant sinkhole swallows the center of a soccer field built on top of a limestone mineA sinkhole formed in an Illinois soccer complex built over an operating limestone mine, creating a 100-foot wide and 50-foot deep chasm. Thankfully, no injuries were reported.