77.208—Storage of materials.
(a)
Materials shall be stored and stacked in a manner which minimizes stumbling or fall-of-material hazards.
(b)
Materials that can create hazards if accidentally liberated from their containers shall be stored in a manner that minimizes the dangers.
(c)
Containers holding hazardous materials must be of a type approved for such use by recognized agencies.
(e)
Valves on compressed gas cylinders shall be protected by covers when being transported or stored, and by a safe location when the cylinders are in use.