to build stone structure you need both the job which can build said structure (miner, logger, rancher, trader or farmer) and 20 cut stones (obtained through either trade, or one of the two production chain : stone into cut stones or wood into coal into cutstones)

resource production trait apply to every job which directly produce the good, compared to soldiers and support job (such as those with the description along the lines of "double your diggers production")

Donc forget that you can harvest with normal people (they are better than structure, efficiency wise) AND that you can remove them from exploitation the turn before degradation then bring on the stone buildings on it (should be crucial for early food, early cloths as well as mining spots)

oh! ok thank you very much :D

So I wanted to ask, the "health" of resource has no impact on the amount you will harvest once you switch to stone structure?

Meaning harvesting the last tick of a resourceis essentially a noob trap? That seems like a design flaw...

The health only matters on animal resources, where the health is the same as the amount of animals. It does not have an effect on the +1 per turn that stone Ranches give, but ranches also triple the initial amount of animals when they are built.

Ouch! Too late, I already harvested the horses till almost nothing left -_-'