A Uranium Ore Block can be found in the world between layers 0 to 64. It spawns in a maximum of 3 blocks per vein. It can be mined with an Iron Pickaxe or better and drops 1 Uranium Ore (Fortune Enchantment does not affect this). Uranium Ore can then be put in a Compressor to make Refined Uranium or put in a Macerator to make Uranium Dust. Likewise, the Uranium Ore Block can be put in a Compressor to make Refined Uranium or put in a Macerator if GregTech is enabled; however, placing it in a Macerator yields 2 Uranium Dust which can then be compressed back into 2 Refined Uranium. A Uranium Ore Block can be mined with a Rock Cutter or an Iron Pickaxe or better with the Silk Touch enchantment to receive the block itself.