According to news outlets, he drowned in a manure pit after the tractor he was on tipped over. You should:Always have a standby person located outside the manure pit who maintains visual and auditory contact at all times. A standby person should be in constant contact and have the proper safety rescue equipment available. Make sure manure pit facilities are of sound structure and safe design. Manure pit systems should be designed such that maintenance can be performed outside of the manure pit.