• Project:  Newmont Leeville Ventilation Shaft No. 3 (Nevada, USA)
  • Client:  AMEC Mining & Metals Americas
  • Date:  March 2012 – January 2016
  • 2,050 ft x 26 ft shaft, frozen to 1,860 ft.  Concrete hydrostatic liner.

In 2012 Thyssen Mining was awarded the contract for engineering and construction of the Newmont Leeville Ventilation Shaft No. 3, the first shaft sinking project in Nevada to employ ground freezing techniques. The project, which included design and construction of the ground freezing and temporary shaft sinking facilities, shaft development including concrete hydrostatic liner, installation of shaft furnishings and construction of permanent surface and underground facilities, was completed on schedule in 2016.

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