Design & Construction of shafts  is an integral part of developing subsurface spaces for variety of applications. The length of shafts constructed in the world is much less than tunnels, however, shaft construction is much more challenging and riskier than tunnels.

Iranian Tunnelling Association
North Karegar Ave., after 2nd St.,
Building 467 (new N°1839)
5th Floor, Unit 4, Teheran
Iran

Tel: + 98-21-886304952/+98-21-88630496

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Trident Project & Mining ServicesPty LTD
PO Box 792 Hamilton Qld 4007,
64 Langside Road Hamilton, Qld 4007,
Australia

Tel: + 61 7 3160 1573

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Thermag Engenharia
Professor, University of Sao Paulo
Rua Pedro Américo 32-22. andar
01045-911 Sao Paulo
Brazil

Tel: +55-11 983546-8478

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