No ammonia may be loaded into or unloaded from any tank truck, tank semi-trailer, or tank trailer unless the handbrake or other braker mechanism and wheel chocks on both sides of at least one drive wheel are securely set to prevent motion of the vehicle during the loading or unloading process.
MS s 18C.121
21 SR 277
September 10, 2007
Official Publication of the State of Minnesota
Revisor of Statutes