So I recently decided to start playing elite dangerous and of course I went with the idiotic decision of doing pve piracy because pvp piracy is mean, it's still ok I just don't prefer it. I have nothing against those who do. Anyway I know you can stalk outside of stations waiting for exports and I know that npc miners carry minerals and metals that they would find in the mining ring they are at but none of that really helped me. Then I went to an anarchy system and a prison colony system and I came across a few scientific samples I robbed an npc of 25 of these and made 2.5 million credits just from that one ship. I've found a few more npc's carrying these things and they are worth somewhere around 130,000 credits each. I've managed to make 10 million credits on pve piracy over the past few days but I'm pretty sure I've encountered those npc's purely based on luck. Is there anyway to figure out which systems will have freighters filled with this stuff?