It’s odd that those two ventilation shafts weren’t filled with reinforced concrete once construction was finished; all the other entrances have their own protected vents. These shafts run through the thickest part of the mountain, so there’s no way to know yet how much damage was done. We’re not talking about eighty or ninety meters of overburden here, but anywhere from one hundred fifty to two hundred meters. Given that depth, and the shafts’ diameter—it’s unlikely a GBU-57A/B could punch all the way through or deliver more penetration than usual.