Hydrogen sulphide /slurry gas is one of the biggest causes of on farm deaths. This gas because it is heavier than air effectively has no smile. It causes rapid unconsciousness and death to any one exposed to it.
The highest concentrations are always released just after mixing starts. The following measures should always be observed.
Always remove stock from the building before mixing.
Provide as must ventilation as possible
Never enter a building during mixing and the pump working
Avoid mixing in still air conditions
Use outside mixing points were possible
Always ensure that another person knows what you are doing
Never enter a tank unless you have the correct safety equipment