The Helpful Stacker explained how the Air Force mandraulic storekeeping process helps to achieve such an error.
Actually experience has shown that the introduction of IT stock holding has made it far easier to make errors that have greater consequences down the line than with a manual system. POETS day corner cutting to get work cleared for an easy stack is much easier to on USASII than its was on the old F1640M's as there are far fewer checks in place on the 'improved' system. Of course doing paperwork manually is time consuming which is the flip side to accuracy.
My expert adviser tells me that Can A is kept in one store at one loaction and Can B in another.
Not necessarily. OM15/OX26 can be stored in the same inflams store as they have the same primary and subsidiary hazards. Indeed at Odious they were stored opposite each other in the same bulk store. Luckily they have large labels on the front that are easy for any fool to read, oh err.....