| Arnold Dix is a renowned Australian geologist, engineer, and lawyer with expertise in tunnelling. |
| He played a vital role in the 400-hour rescue operation during the Uttarkashi tunnel collapse in November 2023. |
| Dix hails from Monbulk, Victoria, Australia. |
| He has been a corporate lawyer and barrister in Australia since 1989 and a part of the NFPA committee since 1998. |
| Since 1999, Arnold Dix has been involved in his consulting firm, serving as a lifeguard, scientist, and lawyer. |
| His contributions include work on ALARP since 2001, underground works chambers at Legal & Technical since March 2020, and with ITA-AITES since May 2022. |
| Dix worked as a scientist at the Office of Supervising Scientists in Australia and was a partner at Maddock Lonie and Chisholm from 2009 to 2011. |
| He served as an adjunct associate professor at the University of West Sydney from 2010 to 2017 and a visiting professor at Tokyo City University from 2017 to 2019. |
| Since 2017, he has been an executive committee member of the International Tunnelling and Underground Space Association. |
| Dix worked as a strategic advisor at White & Case LLP from March 2022 to June 2023. |
| He is internationally recognized as an expert in underground tunnel construction and serves as the president of the International Tunnelling Underground Space. |
| Dix is well-known for his expertise in tunnel safety and disaster response, having investigated events such as the 9/11 disaster in New York, London Bombings, and Madrid Bombings. |
| He has also assessed fire-related disasters like the Daegu Metro Fires and Hong Kong Metro fires. |
| Arnold Dix is affiliated with VPELA, ACICA, Guinness Book of Records as an extreme engineering verifier for tunnels, and serves as a Committee Member of WG2 (Risk Assessment) PIARC. |
| A frequent guest speaker, he shares insights on subsurface infrastructure, tunnelling, mining, and underground works. |
| Dix successfully led a 17-day rescue operation in Uttarkashi tunnel collapse, rescuing all 41 workers involved. |