Past experience with industrial accidents is that fines for safety violations resulting in death is a few ten thousand dollars. No one goes to prison ever, even if the omissions that caused the incident were grave. Here is a report on the fallout from an incident that caused four deaths and much head-shaking in the chemical engineering community: http://cenblog.org/the-safety-zone/2015/05/osha-fines-dupont...

With that background, your faith in the system is touching but unwarranted.