Few details about the incident were immediately available.
The Meeker County Sheriff's Office and OSHA are investigating.
John Evers, of Wabasha, was 67.
The 26-year-old suffered a head injury in the fall.
The 37-year-old was operating an aerial lift when the incident happened.
The collapse was a result of a structural failure, according to authorities.
The tragic accident happened last Thursday in west-central Minnesota.
Kleinendorst passed away Dec. 17 at the age of 59.
It happened Tuesday, Sept. 17 in a rural area near Ely.
The 48-year-old had been on the road working for two months.
The 48-year-old was working in central Nebraska.
The man's identity has not been released.
The incidents happened in Goodhue and Becker counties.