Randall Essex, PE, GE is a tunnelling and risk management consultant with 48 years’ experience providing design, construction engineering, and disputes resolution services for approximately 200 underground projects. He holds two Master’ degrees from the U. of California, Berkeley and is a registered Professional Engineer in multiple states in the U.S.  His Australasia experience includes the Second Manapouri Tailrace Tunnel Project in New Zealand, the Grasberg Mine in New Guinea, the MTR Blue Line in Kuala Lumpur, and roadway tunnel projects in Sydney, Brisbane, Melbourne, and Adelaide.  Randy is a former Vice President and Executive Council member to the International Tunneling Association and is a member of the Dispute Resolution Board Foundation.  With a focus on the avoidance and resolution of construction disputes, he led the development of the American Society of Civil Engineers’ Manual of Practice 154 (2022) on Geotechnical Baseline Reports and two predecessor publications (1997, 2007), is a principal author of the UK’s 2023 CIRIA C807 Guideline for GBRs, and was an ITA reviewer of the 2019 FIDIC Emerald Book.