I was once sent to apologize to a customer for the death of their system admin, who died from our equipment.
He'd removed 3 different safety-interlock panels, all nicely marked, requiring tools and overrides. Then managed to bridge the main power busbar with his hand. BOOOMPHFFF!
I'm not sure what else we could have really done, this guy was bent on destruction - even if we'd put the gear into a bank vault, I suspect he'd have found a way.