Standard metal containers of five (5) gallon capacity or galvanized iron drums, fifty (50) gallon capacity only, are to be used as containers when the quantity kept is fifty (50) gallons or less.

When five (5) gallon containers are used the screw cap must always be in place except when drawing liquid.

When drums are used the drums must be grounded to wet earth, a water pipe, or some similar substance to prevent explosion by frictional sparks when drawing liquid from container through spigot or faucet. A spigot or faucet shall be used on all drums used in this connection and they shall be tightly affixed and not leak.
SOURCE: Added by P.L. 17-78.