people say they pick up high concentrations of barium and aluminum in the soil under where chemtrails appear - I never really believe that because how would they know it's from the trail (which i agree are more often anomolous than not). I long claimed its caused by unrefined jet fuel, high natural suplhur content was apt for making clouds and was why the fuel wasn't going as far as it should in some cases (https://chedca.blogspot.com/2019/11/sleazy-solar-radiation-management.html)
now I think,, if there is some conductive material in those clouds, could they be used to neutralize excitation of the ionisphere in weather wars? to prevent some rogue radar array (or state owned) from ruining someones crops or flooding some companies mines?
