local offworld_resources = {
  { name="angels-ore1",  weight=100,  richness=1 },
  { name="angels-ore2",  weight=100,  richness=1 },
  { name="angels-ore3",  weight=100,  richness=1 },
  { name="angels-ore4",  weight=100,  richness=1 },
  { name="angels-ore5",  weight=100,  richness=1 },
  { name="angels-ore6",  weight=100,  richness=1 },
  { name="uranium-ore", weight=10, richness=1 }
}