Maybe t2 need the laborer apprentice to research, but I am thinking not ALL nodes but SOME nodes have a "rich" tag on them for a metal, and you can build a t2 building that requires a hard restriction like I said laborer, for unlimited but SLOWER gain of metal.
Starting to clear out tin and copper veins and still at that choke point with tanning rack in my game. But I kind feel the laborer is well worthless minus the tanning rack. Now if we could also get a primitive mine maybe t3 version as well later on with better production rate that would be a great QOL
I know we got stuff every where, its why saying make it t2 so mid game, then hide it behidn the laborer apprentince. But if you gonna work on a forestry hut like I keep hints at a way to self sustain ore would be nice to could bundle them into one larger update. I could see that update getting a ton of love online and news being shared in bulk as well if we got ability's to replenish trees.