SUPERIOR, Iowa (AP) — Authorities say a man died after being pinned by a machine he’d been working with in northwest Iowa. The accident occurred around 12:40 p.m. Friday at a farm in rural Superior. The Dickinson County Sheriff’s Office says the man was pinned by a backhoe attached to a tractor. The Sheriff’s Office says the man was pronounced dead at the scene. He’s been identified as 72-year-old Thomas Mart.