My first couple of attempts at this were frustrating. Today I'm doing better. I have boosted luck to 1500, I'm not mining pockets unless it's an ore I want. Unless I'm mistaken, if you don't hit niter the first swing of the pick, you're not going to get it from that pocket. so I'm only mining ores I actually want. Hit and move on if it's not.
Also, it doesn't always spawn where you can see it. I've learned to watch for the text and then use the object handles to target the niter in the wall.
Also, it doesn't always spawn where you can see it. I've learned to watch for the text and then use the object handles to target the niter in the wall.