Arnold Dix


Arnold Dix is a geologist, engineer, lawyer, scientist and author from Monbulk, Australia. He is a former president of the International Tunnelling and Underground Space Association.

Early life and education

Dix earned an honours Bachelor of Science from Monash University in 1986, and a bachelor of laws from Monash University in 1988.

Career

Dix is a registered barrister at the High Court of Australia and a member of the Victorian bar. He is a former counsel to White & Case legal firm and a former partner of law firms Maddock Lonie & Chisholm; and DLA Phillips Fox. Dix is Professor of Engineering at Tokyo City University. He is Professor of Engineering at MIT World Peace University, Pune, India. He is a former professor of engineering at Queensland University of Technology and at Western Sydney University.
Dix is a former president of International Tunnelling and Underground Space Association, which is based in Geneva. He is also the founder of The ALARP Group.
In 2023, he was part of the Uttarakhand tunnel rescue operation of 41 workers in India who were trapped in Uttarkashi, India.
Dix has also been involved in improving the safety of bulk milk truck tankers. In 2023, he was announced by the National Bulk Tanker Association as the keynote speaker for Bulk Tanker Day.
In 2020, Dix, together with Lord Robert Mair and Peter Vickery QC, established Underground Works Chambers. The company offers technical and regulatory solutions for challenges related to underground spaces.
Dix is a member of the National Fire Protection Association standards committees for Road and Rail Tunnels safety. He also serves on PIARC for road Tunnel related matters.
In September 2025, the ITA, in cooperation with the International Atomic Energy Agency, appointed Dix as inaugural chair of its nuclear waste disposal working group to support UN Member States in developing deep geological repositories for high-level radioactive waste.

Uttarakhand tunnel rescue

On 19 November 2023, Dix joined the Uttarakhand tunnel rescue operation. Upon arrival, Dix promised to evacuate all 41 workers safely. Dix played a leading role in the operation that saved 41 workers who were trapped nearly 200 ft below the surface. He worked together with five agencies ONGC, SJVNL, RVNL, NHIDCL, and THDCL, who had encountered difficulties completing the rescue mission.
Dix suggested that the team use soft mining techniques, to avoid disturbing the mountain and causing another avalanche which would put the workers at further risk. Rescuers had been using large earth drilling machines which caused vibrations that made the tunnel more unsafe. The large drills also broke down from hitting metal obstacles from the collapsed tunnel, forcing the rescue operation to be paused frequently. Dix proposed much slower and gentle approaches that he considered safer. The rescuers used a thin pipe to carry the trapped workers to safety. They finally excavated by hand to avoid disturbing the rock and causing further damage.
Dix displayed faith during the rescue by praying at a makeshift temple during the rescue, which gained attention on social media. During the rescue mission, Dix was seen praying at the temple of local deity Baba Bokh Naag ji.

Personal life

Dix has two siblings, Helena Dix and the late Colin Dix. He is married to Divina Dix. He has three children—Sam, Hannah and Edward—from his first marriage to Karen Beckmann. He has one stepchild, Trisha, from his current marriage.

Awards and honors

He was a finalist in the 2026 Victorian Australian of the Year competition.

Awards

  • In 2011, he was the recipient of the Alan Neyland Tunnelling Society award for tunnel fire safety excellence.
  • In 2022, Dix was honored with a Committee Service Award by the National Fire Protection Association of the United States of America for his contribution to road and rail tunnel fire safety.
  • In 2023, Dix received recognition from Australian Prime Minister Anthony Albanese for his work in the Uttarakhand tunnel rescue.
  • In 2024, Dix was awarded the Distinguished Alumni Award by Monash University.

    Publications

  • Dix, A.. "Tunnel Fire Safety and the Law". In Beard, Alan; Carvel, Richard. The Handbook of Tunnel Fire Safety. Thomas Telford.
  • Burns, Penelope; Stevens, Garry; Sandy, Kate; Dix, Arnold; et al.. "Human behaviour during an evacuation scenario in the Sydney Harbour Tunnel". Australian Journal of Emergency Management.
  • Dix, A.. The Fatal Burnley Tunnel Crashes Melbourne, Victoria, Australia Incident – 23 March 2007.
  • Dix, A.. "Risk Analysis – from the Garden of Eden to its Seven most Deadly Sins". 14th International Symposium on Aerodynamics and Ventilation of Tunnels , Dundee, Scotland.
  • Dix, A.. "Cable Certification – Crisis or Crossroads?". Tunnelling Journal, Oct/Nov 2012.
  • Dix, A.. "Emergency Cable Cert Withdrawal – 3M/UL". Tunnelling Journal.
  • Dix, A.. "Doing the Best with the Resources Available: Tunnel Safety and Security in a Severely Resources Limited World". ISTSS Montreal 2016.
  • Dix, A.. "“Rock Beats Paper” – The Renaissance of Fairness in Ground Risk Allocation – the new ITA/FIDIC Emerald Book". Tunnelling Journal, September 2019.
  • Dix, A.. "Regulatory Baseline Reporting: The Case for Quantifying Expected Regulatory Costs and Delays in a Baseline Report – Lessons in Crown Unfairness from Australia". International Journal of Civil Engineering and Technology , Volume 11, Issue 08, August 2020.
  • Dix, A.. "Air Cleaning Technologies for Tunnels – Honesty is the Best Policy for Protecting Human Health". International Journal of Civil Engineering and Technology , Volume 11, Issue 1, January 2020.
  • Dix, A.. "The Renaissance of Fairness in Ground Risk Allocation – The New ITA/FIDIC Emerald Book". International Journal of Civil Engineering and Technology , Volume 11, Issue 1, 2020.
  • Dix, Arnold. The Promise: How an everyday hero made the impossible possible. Australia, AU: Simon & Schuster Australia.