Re: Mining accidents having caused physical damage (overheating hw, fires, etc)
Mechanical failure of a PSU fan blade, on a Corsair AX1200, after barely 700h of operation. Aah, the joy of running a mining cluster large enough to make improbable failures actually occur once in a while... After the blade broke, the imbalanced fan was making the whole computer chassis vibrate quite hard.
That's when you just break one off on the other side and call it good. 
Impossible. There is an odd number of blades.
Break them all off
... and build your own!