OSHA: Seven Steps to Grain Bin Safety
1. Do not enter a bin where grain is built up on the side
2. Turn off and lockout equipment before entering bins or performing maintenance
3. Place a trained observer outside of the bin in case of an emergency
4. Test the air in the bin before entering
5. Use a safety harness and anchored lifeline when entering a bin
6. Never walk down grain to make it flow.
7. Control the accumulation of grain dust through housekeeping
click here for a pdf print of these 7 Safety Tips from OSHA