I started a new game and got through the tutorial fine until the part where you do construction research. I cannot find any Buried Technology.
I've been to two different planets in my starting system (actually three, but one is a water world with nowhere to land), I've tunneled down to the bedrock, walked for ages, scanned and scanned, worn the analysis visor, and nothing. I've found subterranean artifacts, but no tech. Is there something obvious I'm missing?
Edit: The fourth and final planet had what I needed. I guess I was unlucky with my starting position.