I already read thread...
Word "Chelyabinsk" means for us a city, but not all province/region.
This post about Mayak and territory around 55*42'44.94"N, 60*50'53.07"E. But spot placed on the Chelyabinsk city at 55*08'15.06"N, 61*26'35.61"E.

>Russia has not
Each country has the problems