Bomb 1-3 (91.2%)
Mining Shirt (2.4%)
Mining Pants (2.4%)
Bone Pickaxe (1.33%)
The Undead miner, (Also known as a skeleton Miner) is a Pre-Hardmode mob that spawns commonly in the cavern layer of the world.
When slain it drops 1-3 bombs and has a chance to drop any part of the miner set or a bone pickaxe when killed. The miner set is very useful if you are trying to clear out an area, or if you just want to go on a mining spree, which encourages farming skeleton miners. They have a stronger console/mobile only counterpart called the Vampire Miner.