2017 Australasian Tunnelling Society Conference — 30/10 – 01/11

Sigra is very much looking forward to attending the Australasian Tunnelling Society Conference in Sydney at the end of this month. Industry luminaries, tunnelling professionals, government representatives, consultants and academics will converge in Sydney for three days of exhibits, keynote presentations, peer reviewed papers, and networking opportunities.

How to find us:

You will be able to find us at Booth 31.

What we will be showcasing:

  • We will be showcasing some of our latest R & D work and tunnel infrastructure developments.
  • Managing Director, Dr Ian Gray, will be presenting two papers: Sedimentary Rock Properties, and Managed Pressure Drilling.


Further Reading:

Stress in Rock

Managed Pressure Drilling — Why Custom Design Matters

The Measurement of Rock Stress for Tunnelling


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Author: Ian Gray
Ian initially worked in Australia supervising the installation of the first gas drainage system at Central Colliery and then went on to work as Senior Geotechnical engineer building a mining wing to the consulting company DJ Douglas and Partners. In 1990 he became Principal Engineer, Mining Research with the Safety In Mines Testing and Resarch Station of the Department of Resource Industries of the Queensland Government. In this role he worked on frictional ignitions, mine explosions, windblasts, gas drainage and directional drilling including the first surface to in-seam operation in the country in 1991. In 1994 he started Sigra as a one man business. Since then the company has grown under his guidance to span mining, gas, civil, geotechnical work and a number of mechanical and electronic product developments.

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