Table 5.3.21: Mining Rates
(Cubic Volume of Rock per Eight Hours Labor per Miner)
Miner’s Race - very soft rock(limestone) - soft rock (sedimentary rocks) - hard rock (lava, igneous rocks)
gnoll, halfling, human 75’ 50’ 25’
gnome, kobold, half-orc, Stout halfling, Sul human 80’ 60’ 30’
goblin, orc, uldra 85’ 65’ 30’
dwarf, hobgoblin 90’ 70’ 35’
half-ogre, mul 120’ 85’ 45’
ogre 150’ 100’ 50’
hill giant 250’ 150’ 75’
fire giant, frost giant 300’ 200’ 100’
stone giant 500’ 350’ 175’
Lets say we get three squads of 10 dwarves each, each squad working one eight-hour shift per day.
That's 1050' per day.
There are 5280 feet per mile.
Assuming we would need a roughly 4 by 6' passage (24 cubic feet per foot of length) that's 120 days to complete one mile of mining.
So ha! THREE miles per year!
[runs out to find thirty dwarves to build him a passage from his house to the university, just a mile and a half away]
