Director Michaels,
My compliments on the Board’s wisdom in purchasing my exclusive invention, the suspended vault. My servants will assist your workers with the installation of the vault, as its complexity no doubt surpasses their limited mechanical experience. However, the bank will be responsible for maintaining its perfection in the future.
If someone is foolish enough to disengage all four brake couplings at once, the vault will plummet down the shaft to its destruction. To avoid such a disaster, remove the coupling lever and stow it somewhere safe from all idiots. Barring major catastrophes, my vault will function seamlessly for centuries.
Sincerely,
-Kirin Jindosh