1941
Is born to parents Harvey Carlton Gray Sr. and Annie Louise Williams Gray.
1961
Earns an Associate of Arts from Middle Georgia College
1964
Graduates from the New Mexico Institute of Mining and Technology with a Bachelor of Science in chemistry.
1966
Starts his career as a staff chemist at the Savannah River Plant, where he remains until 1969.
1967
Graduates from Texas Tech University with a Master of Science in chemistry.
1972
Concludes his higher education with a Doctor of Philosophy in inorganic chemistry at the University of South Carolina.
1972
Is a staff chemist at Savannah River National Lab until 1988.
1986
Is honored with inclusion in Who’s Who in Technology.
1986
Receives the U.S. DOE Military Application Award of Excellence for significant contributions to the Nuclear Weapons Program.
1988
Becomes a chief scientist at the Lawrence Livermore National Laboratory.
2000
Is promoted to Chief Scientist of the United States – Russian Plutonium Disposition Program.
2002
Receives the Glenn T. Seaborg Actinide Separations Award from the Actinide Separations Board.
2005
Retires from his position as a chief scientist at Lawrence Livermore National Laboratory.
2005
Returns to the Lawrence Livermore National Laboratory in a part-time capacity.
2021
Fully retires from the Lawrence Livermore National Laboratory.