I was thinking of the Indonesians. If the silt washes onto beaches it could turn the coastline toxic during dry weather and, as you mentioned, the workers. And

I was thinking of the Indonesians. If the silt washes onto beaches it could turn the coastline toxic during dry weather and, as you mentioned, the workers. And as you point out, if it turns bad it is going to be very long time to resolve. The solution would be to keep thr particle size larger, at lower efficiency.