Because of the COVID-19 pandemic, NAT 2020 has been canceled to ensure the safety and well-being of our industry professionals. However, to continue the intent of our conference and proceedings, the proceedings are being made available electronically, and a few papers will be presented utilizing a virtual format.

This year’s proceedings deliver the knowledge and technical detail you are in search of. Crafted from a collection of 87 papers written by experts and leaders in the industry who share their expertise, real-world applications, and “lessons learned” from around the globe, this book takes you deep inside today’s projects. It includes challenging design issues, fresh approach on performance, future projects, and industry trends as well as ground movement and support, structure analysis, risk and cost management, rock tunnels, caverns and shafts, TBM technology, and water and wastewater conveyance.

The overarching goal is to enhance and improve future industrial underground projects, and successes, using applicable information presented within these published proceedings.