EARLHAM, Iowa (AP) — Authorities say an employee was killed after a blast at a Madison County quarry. Madison County Sheriff Jason Barnes said in a news release that it appeared that debris struck 42-year-old Tracy Hockmeier, of Winterset, “following a routine blast” at the Martin Marietta Earlham Quarry Tuesday night.

Barnes said a 911 call was placed around 6:40 p.m., and Hockmeier was pronounced dead at the scene. An investigation into the incident is ongoing.