Soldato
There's another video doing the rounds showing the aftermath around the bast. There's a carpark just over 500m away from one of the bases that was blown up, all the cars were destroyed or heavily damaged. A quick look on Google and an blast wave that big is about 1/3 of the atomic bomb that struck Hiroshima (Hiroshima having about a mile blast wave).It's clear Russia aren't releasing footage of this really, or at least that seems to be the case.
Guessing at the count seems kind of fruitless, they may be able to estimate numbers based on before/after satellite images.
That was a big old explosion though that's for sure.