I don't know if it's only effective depth of the ordinance that matters here. Positive interference could be used to amplify the explosive wave of the 6 bombs that were dropped with accurate-enough timing.
The depth assumptions for the facility are often with a shallow gradient roads for the entrance and exits, but there is no need for the gradient to be shallow.
Is this where we are? Just making up technobabble to glorify the US war machine in a supposedly intellectual forum? All the while the white house says the report is real, but they disagree with the contents of their own intelligence report because "we want big bomb make big boom work good"?
After 25 years it has become abundantly clear that Iraq (the concept) is what the US is, and what it deserves.