30 CFR §47.44
- (a)The operator does not have to label a temporary, portable container if he or she ensures that the miner using the portable container—
- (1)Knows the identity of the chemical, its hazards, and any protective measures needed, and
- (2)Leaves the container empty at the end of the shift.
- (b)Otherwise, the operator must mark the temporary, portable container with at least the common name of its contents.