So I got to the Stainless Steel stage finally, after 4 or 5 long days of play... I always thought Chrome was one of the rare dusts, however I've got plenty of that thanks to processing all my Ruby Ore... what's holding me back from progressing is Manganese. NEI lists six ores containing it, none of which I've found, and the only one I think I've ever found in past play-thrus is Scheelite Ore. How do you find or make Manganese Dust while progressing thru early-game? Is it basically "go mine until you find some Scheelite", or is there another way?