lets say each bar weighs in at 30 pounds each pallet has 84 ingots (7x3x4) and then stacked 6 high this comes to around 15000 pounds exerted on the bottom pallet.
A standard heavy duty wood pallet can take around 3500 pounds (standard metal ones can take 6000 pounds.) It looks like you have 15000-pound load on the bottom pallets you are way over the limits of a standard heavy-duty pallet. Granted these seem to be even stronger pallets then what I am referring to.
It is way over their weight limits in my opinion. Don’t forget to take into account the drop weight when the forklift places the top pallet on the stack.
There are a lot of unknown variables, but it sure seems like a cheesy and unstable way to stack millions of dollars in gold.
The fork lift operator is a seniority position. That is, that is not an inexperienced young operator.