Clearly I haven't a clue if anyone is mining Tesoro, as I am not there to check for myself, and neither are you. If someone goes down there and checks, please post here, then we'll know for sure.
I expect the informales are still there, and they put their stuff through the Dynacor mill, as do other informales in the immediate area, so that will account for the increase they are having, maybe?
Otherwise if you think gold is being mined there commercially, someone ought to go down and check, and take photos.