Answer:
Leave the blower running for ventilation while anyone is inside. Running the Silo blower for 15 to 45 minutes before entering the silo and while you are in the silo will help remove silo gas, but this is not a substitute for a self-contained breathing apparatus.
Explanation:
There are no choices. Sorry, couldn't help but there are no resources to help.
True but it also can mean lifting your maximum weight for the minimum of one rep