Thanks for playing! After jumping, you can go back essentially to the first area, jump over some rocks then a pit and get a laser upgrade to stun the turrets. I had a lot of plans for the radar that didn't happen. There's actually enough ore in the section after you up up the ramp and fall off, one is a little hidden (in part due to the lack of art), again I had intended for the radar to be more helpful.
Someone else also called out not get the mining vein at first, which is no surprise since, aside from the rocks, didn't spend any time on the level art. I feel like such a dummy but yeah, I absolutely should have put some pics in "how to play", I've added that to my jam checklist for next time, thanks again for the feedback!