Big Dipper at Krug Park, 1930
On July 24, 1930, the Big Dipper roller coaster ride at Krug Park in Omaha, Nebraska had a loose bolt that the ride’s operators were unaware of until it was too late. Four cars came crashing to the ground, injuring 19 people and killing four others who had gotten pinned under the car when it fell. This was considered the most tragic roller coaster accident at that time and the park ended up closing ten years later. Then Omaha passed an ordinance that banned roller coaster rides in their city.