@piggo
In which case we can probably deduce someone decided to cut corners from start to finish of this transport operation, I think in general there are strict rules on handling all substances, depending on their hazard level. They are there to be followed not ignored due to some time or financial constraint.

Needs to be investigated, those who failed held to account, retrained or sacked. So that this won't happen again. What if next time it is a more dangerous substance. ?