Yep. And in beta 3C, we're eliminating the tech requirements. If you have the resource in your territory, you can build on it if you have the money and materials.
The techs will then allow you to improve your extraction.
I don't know why I had put in a tech requirement in the first place. Brain damage is my main assumption.
I mean, *I* used to go to Cripple Creek Colorado and mine for gold with my dad when I was 5. If a 5 year old can attempt to pick up gold, I think adults can do it.