Each year The Global Arbitration Review (GAR) publishes a unique signature survey: the GAR 100, a guide to specialist arbitration firms worldwide. The survey points readers to dependable counsel, offering extensive qualitative analysis of arbitration practices around the world.
The GAR 100 Expert Witness Power Index shows the value of a firm’s hearings, on average; how many hearings it took part in over two years; and how many members of the firm are good enough to be listed in the current Who’s Who Legal: Arbitration. These scores are combined into a ranking.
According to the 2022 GAR 100 rankings, Delta is:
- Listed in the “Power 30” Expert Witness Power Index.
- Listed 3rd in the world for the number of experts Cross-Examined.
- Listed 8th in the world for the percentage of hearings involving Construction.
- Listed 16th in the world for the number of Energy & Gas hearings.
Delta Consulting Group has 10 experts recognized by Who’s Who Legal since 2015 in the following categories:
Thought Leader Guides:
- Thought Leaders Global Elite
- Thought Leaders Construction
- Thought Leaders Experts Quantum & Delay
- Thought Leaders Arbitration
Practice Area Publications:
- Construction
- Arbitration
- Energy
- Investigations, Forensic Accounting
- Experts Construction Quantum & Delay
- Experts Financial Advisory and Valuation, Quantum of Damages
- Experts Economic Consulting, Quantum of Damages


Who's Who Legal Says...
Charles Heckman
President
Charles Heckman comes highly recommended for his “extremely credible advice and opinions that are well supported” as well as his “vast knowledge of construction scheduling”.
Cory Milburn
Managing Director
Cory Milburn is a top-drawer practitioner who is highlighted by impressed sources for his deep understanding of CPM delay analysis.
Robert Cavoto
Senior Director
Respondents laud Robert Cavoto as “thorough, diligent and creative in his work”, further praising him as “responsive in his dealings and a pleasure to work with”.
Dakus Gunn
Senior Director
Dakus Gunn is a prominent specialist on delay, quantum and productivity matters, principally in construction, infrastructure and energy cases.
William "Bill" Jennings
Senior Director
William Jennings “is able to distil a lot of detailed accounting facts into clear presentation for the jury”.
Carlos Loayza
Senior Director
Carlos Loayza is widely endorsed as a “standout delay analysis expert” by sources who highlight his “excellent ability to explain complex issues in layman terms”