Comment Re:logisitcs (Score 1) 361
You don't need the equivalent mass of dust thrown by volcanic eruptions. You need the equivalent *reflexive surface*. And that can be done with drastically smaller masses, provided that the size of the particles is much smaller than the average particle size thrown by volcanoes and thus the mass-to-surface ratio is tiny. In other words, engineered particles can be made fine enough so that you don't need unrealistic ammounts of them to produce some noticeable effect.
