Single drum rollers 2018 1,850 h United States, Fort Dodge, Iowa
Pneumatic tired rollers 2020 2,368 h United States, Bondurant, Iowa
Single drum rollers 2022 183 h United States, Sergeant Bluff, Iowa
Single drum rollers 2023 United States, Sergeant Bluff, Iowa
Single drum rollers 2021 389 h United States, Davenport, Iowa