MINNEAPOLIS (WCCO) — Two construction workers were struck by lightning in western Wisconsin Tuesday morning, leaving one dead and the other seriously injured.

According to the Dunn County Sheriff’s Office, the two — 60-year-old Richard Nelson and a 20-year-old man — were part of a crew constructing a pole shed on 390th Street in Menomonie.

They were both on ladders when lightning struck just after 11 a.m., and both were knocked off. Nelson was pronounced dead at the scene, and the 20-year-old was taken to the Mayo Clinic in Eau Claire.

The sheriff’s office said the crew had stopped working because of weather, and had resumed shortly before the lightning strike because the weather had settled.