GBU-57A MOP dropped by B-2 can do 61m of concrete, that's pretty decent and should at least collapse any access tunnels even if the facility itself is deeper.
The very source you you quoted (from which wikipedia got its figures Namely:
) has this to say:
"By some reports, it was expected to penetrate as much as 60 meters (200 feet) through 5,000 psi reinforced concrete, and 8 meters (25 feet) into 10,000 psi reinforced concrete
(these number seem suspiciously high and may in fact be first in feet, not meters)."
The bold part is on actual website quoted by wikipedia with link:
Meaning only 60 feet or 20 meters into 5,000 PSI reinforced Concrete and only 8 feet or less than 3 meters into 10,000 PSI concrete. Even those numbers seem highly exaggerated.
again: The bold statements are the from the source itself NOT mine. So its only 8 Feet and NOT meters penetration since Global security. org itself states, these numbers are actually in Feets and NOT Meters, which numbers? the first one before brackets in the above quoute .
Meaning ONLY 8 feet of 10,00 PSI concrete or less than 3 meters and that too at best under ideal and likely exaggerated optimistic scenario and 60 feet or just 20 meters of soil ( as well as 5,000 PSI reinforced concrete since they both are same in real world conditions).
In real world and in real mountains which are much harder due to "gravity induced integrity" meaning weight of mountain rock makes it extra ordinarily difficult to separate and cut deep through it. Its far harder than Concrete in practice as increasing weight of surrounding mass, that creates massive compressive stresses, makes it far tougher and hard to cut through than concrete. Mountains are hard, Much harder than a slab of concrete of similar depth due to this.
Also access tunnels in mountains start at the depth of actual facilities. No one digs mountain from the top. Access tunnels are cut while having vast mountains mass above them. They are just as hard to penetrate.
There is Nothing on earth that can penetrate straight into a hard rocky mountain 60 meters. No amount of secret wishing will work. It would require so much energy and speed that no metal casing can survive it.
US is NOT God. Even america has to obey the Physics.