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- 21:15, 10 February 2011 (diff | hist) . . (+5) . . Shaft construction
- 20:59, 10 February 2011 (diff | hist) . . (-6) . . Shaft construction
- 20:58, 10 February 2011 (diff | hist) . . (-29) . . Shaft construction
- 20:57, 10 February 2011 (diff | hist) . . (+11,299) . . Shaft construction (→Shaft Construction)
- 14:38, 8 February 2011 (diff | hist) . . (0) . . N File:Comparison of Concrete and Steel Headframes.png
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