I don't think TNT is working properly. I might be wrong, but it seems like it should be destroying more blocks than what it is, especially with my mcmmo mining skill. I placed TNT on top of this 2x2x2 cube and it couldn't even destroy the 8 blocks. Not to mention that when i went to pick up the ore there were only 4 ores from 7 blocks that were destroyed (other times I've gotten as few as 1, but never that same amount as blocks). When I look at /mining it says there's a +4 radius and a +216% ore yield but it can't even blow up the 2x2x2 cube.