I've been looking around for a while now to figure out the exact nature of resource gathering, but the answers i'm finding are generally speaking pretty vague.

I know that higher level resource facilities means a higher income, and that workers generate additional income based on the number of workers, and the number/level of resource facilities, but i don't know any of the numbers. I saw the building stats in the wiki measure the resource gain from facilities as a "% efficiency", but don't know what that means.

I suppose what i'm asking is, how exactly is the number of resources i gain determined, between facilities and workers and such?

from what i know is that each lv metal mine give you better efficienty
so the percentage number of resources gained by the structure times your current amount of workers= your workers resources... and thats about what i know about the relationship between them...