Theory:. The US is limited to five refineries for petroleum products by law (IIRC). These are secure facilities, just like airport grounds. I don't think it's a reach that they could place the aluminium, barium and whatever else they want into the fuel itself and let the engines do the rest at altitude. Also a way to distribute who knows what else hazardous waste?
I'm not a chemistry major by any stretch, but it seems possible. I think there was also a method of taking any waste and using a laser to convert it down to graphene (Rice University professor?); maybe the process could be altered for the small particulate size for aluminum & barium needed.
Theory:. The US is limited to five refineries for petroleum products by law (IIRC). These are secure facilities, just like airport grounds. I don't think it's a reach that they could place the aluminium, barium and whatever else they want into the fuel itself and let the engines do the rest at altitude. Also a way to distribute who knows what else hazardous waste? I'm not a chemistry major by any stretch, but it seems possible. I think there was also a method of taking any waste and using a laser to convert it down to graphene (Rice University professor?); maybe the process could be altered for the small particulate size for aluminum & barium needed.