There were Stations generally cut at every 100 foot level. From these stations tunnels (or drifts) have been extended to intersect an follow the ore body. At the 1850 level a drift was driven a out a quarter of a mile to the North where an underground shaft (or winze) was sunk to a total depth of 2550 feet below the surface.
Other levels were cut out from this winze at 100 foot levels making 2,550 the lowest working level of the mine.
The Empire State building is only 1,250 feet tall, Sterling Hill mine is another 600 feet deeper than the Empire State building is tall.
ore body is situated like a flag only leaning at 55˚