In the 90 plus years we have been in business, we have sunk several hundred miles of shafts conventionally.
Finished diameters have varied from a 36-foot surge shaft to an 8-foot diameter bleeder shaft.
Depths have varied from less than 100 feet to close to a half a mile.
The shafts have been lined to the client's specifications with steel, concrete or shotcrete reinforced with fiber. Most have been used for varying purposes in coal and non-ferrous metals for man and material access in and out of the mine and for fan ventilation purposes.
Some of our recently completed projects:
We have deepened existing vent shafts for conversion to production shafts, including the installation of all shaft steel and skip components.
COWIN & COMPANY, INC. 301 Industrial Drive . Post Office Box 19009. Birmingham, Alabama 35219-9009 . 205-945-1300