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Revision of Vertical Shafts from Sat, 2009-02-21 15:04

Posted Sat, 2009-02-07 17:06 by Technical Develop...

Vertical Shafts

Vent shaft 10 m dia, build 1 m/day, excavate at 80 m3/day

Vent shaft connecting tunnels 6m dia, build 0.75 m/day, excavate at 21 m3/day

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