* It is possible to mine up, down or flat but only the final action is taken into account. The resulting slope of up or down will be approximately 20.
* There are slight deviations in mine slopes (up to 3 "Slope") when a mine shaft progresses.This is based off Mining Skill.
{{Spoiler| ** skill less than 50, +-3 ** skill = 50, variance is +-2 ** skill = 70, variance is +-1 ** skill = 90+ no variance}}
* When connecting two mine shafts, the direction of the mining is irrelevant; one floor will connect to the other floor and ceilings will likewise connect.
* Each action will produce one rock shard.