Hi all, I'm kind of new to the PT module and was wondering what would be the best way to analyze an accidental dump of, for example, 1 cu.m. of silt?  I don't think it would be technically feasible to actually model the actual number of silt particles in 1 cu.m. as it would result in way too many particles. 

To estimate the actual concentration, would it be better to input the Mass as "Total Emitted Amount" and then just have a high number of particles?