Vaguely reminiscent of the cursed mine my PCs will learn about someday. A simple mine, extracting silver, with a large amount of pitchblende. The corporate mine owners want to increase output from the mine, but miners experience curse-like symptoms when they stay there too long. It's a mystery why this cave in particular causes miners to feel fatigued at first, ending up with lesions on the skin and vomiting blood. Remove Curse doesn't seem to help at all, but for some reason a simple Lesser Restoration is enough to end the symptoms...