Nominations for the Iowa Business Hall of Fame have opened for the 2020 class, the Greater Des Moines Partnership announced in a news release. The deadline for submitting nominations is 5 p.m. on Aug. 20. Nomination forms can be found on the Iowa Business Hall of Fame website. The Hall of Fame recognized Iowans who have made outstanding contributions to the development and enhancement of Iowa’s business climate. Honorees are chosen on merit rather than endorsement, and are selected on five different criteria: business leadership, community development impact, community volunteerism/leadership, strategic leadership and business recognition.