I always wonder when I see an earthquake reported at 5.0km or 10.0km depth if that's a signature of some DUMB house cleaning. I suspect the CIA built several of these and with Gina's recent unplanned vacation it's a little more interesting to see a pop of round numbers. I think a bunker buster would register around a 3.0 - 3.5 mag depending on factors, I suppose, but I think we are in the ballpark with regard to magnitude.
So, here's the short list from the last week: USGS Earthquake Monitor
M 3.5 - 55km ESE of St. Cruz, VI, 10.0km depth <= St. Cruz is right next to Epstein's Little St. James
M 2.8 - 5km W of Andover, KS, 5,0km depth
M 3.2 - 16 km WSW of Stanley, Idaho, 10.0km depth
M 2.5 - 22 km WNW of Stanley, Idaho, 9.4km depth (close-by location, so included)
M 3.1 - 187 km W of Bandon, Oregon, depth 10.0km
M 3.2 - 12 km NNW of Bowdle, South Dakota, 5.0 km depth
Total speculation anons, but an interesting possibility given recent events.
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[–] 26791730? ago
Compared to any other depth, 6.2 miles (10 km) appears way more frequently on the earthquake app I use. Assuming the earthquakes are occurring randomly, I wouldn't expect to find too many at similar or same depth. I can't say definitely it means DUMBs but there is some reason they seem to cluster at that depth.