LOL! Excellent point. If the standard proposed by the grieving son were applied to American households, my guess is that most homes would be closed for business following such an inspection.
There are two types of violation for which MSHA issues citations. The frequent, non-serious violations are over things like "frayed wires on an extention cord", or "cover not replaced on electrical junction box" or "monthly inspection card not punched on fire extinguisher". Those kinds of violations are hit with small fines and usually taken care of right there as the MSHA inspector watches.
The second kind of violation is called a "significant and substantial" (S&S) violation. Those are the biggies. They hit a mine with thousands of dollars of fines over S&S citations. Those get serious attention, and they are rare. An S&S citation is given for things which are an immediate hazard or which have been repeatedly ignored after previous warnings and citations. Leaving energized, high-voltage wires exposed in a traffic area or operating equipment with safety interlocks disabled or with guards removed are examples of things MSHA will smack you hard for.
One other thing is falsifying records. If you "fudge" a safety inspection form, checking off inspections you haven't actually performed, you will PERSONALLY go to jail. The company is not even ALLOWED to defend you for it.
MSHA does not mess around with miner safety. Not even a little.