I've tried to blow up these structures with satchels, c4, calling in an airstrike with a script I use for ship launched missile. Bo_Mk82_MI08 is the munition. If an Mk82 cannot destroy those structures, then something is wrong with the game.
Those structures used to be destructible until a recent patch.
Other buildings that used to be destroyed with a single c4, now do not even crumble after repeated explosions of satchel charges.