Quarrys mine a 9x9 area infront of them while powered. They will keep mining downwards until they hit the bottom of the map or Lava. Quarrys can not mine through Lava. The blocks that are mined by the Quarry will be ejected from the top of it if there is no Transport Pipe or Chest attached to it. A Quarry can be powered by a single Combustion Engine.