Byron Leo Ristvet was born on August 22, 1947, in Tacoma, Washington. Byron married Linda R. (née Duco) on February 15, 1975, and they had two children: Lauren and Matthew.

Ristvet obtained a bachelor of science degree in geology from the University of Paget Sound in 1969. He then obtained a doctor of philosophy degree in geology from Northwestern University in 1977.

Ristvet was active in the United States Air Force from 1973-1977 and then part of the reserves from 1977-1997. He retired as a lieutenant colonel.

Lawrence "Larry" Victor Robinson was born on January 14, 191, in Stella, Nebraska. Larry married Lois (née Fisher), and they had two children: John V. Robinson and Carol Byers.

Robinson attended the Milwaukee School of Engineering in Milwaukee, Wisconsin.

Robinson was employed as a tunnel mechanic and welded for the Nevada Test Site.

Robinson passed away on October 29, 2010. Source: https://www.findagrave.com/memorial/61469197/lawrence-victor-robinson

Stephen Craig Ronshaugen was born on March 22, 1948, in Minot, North Dakota. Stephen married Bonita on February 10, 1979, and they had two children: Matthew and Kristina.

Ronshaugen obtained a bachelor of arts degree from Minot State University. He also did some graduate work at the North Dakota State University.

Gary W. Royer (1945-) is a Reno, Nevada based Certified Public Accountant (CPA) who served as an auditing agent, supervisor of internal control for the Nevada Gaming Control Board, and President of the Casino Control Corporation. In the 1970s and 1980s, Royer worked with the Nevada Gaming Control Board as an auditing agent and in a supervisory position within the Audit Division.