He was the most important physicist and engineer for nuclear reactor shielding for the submarines Nautilus and Seawolf and the ship Savannah.
His pioneering team developed experiments, models, and nuclear data essential for shielding and introduced the concept of neutron removal cross-section.
"Bliz," as he was better known, began with a small group of pioneers at Oak Ridge National Laboratory and developed a significant division of researchers addressing all aspects of radiation shielding, including experiments, analytical models, and nuclear data.
His exploitation of the concept of a neutron removal cross section had, perhaps, the widest impact on early methods development.
Beyond Bliz's technical leadership, his humanistic interest and sensitivity toward others often led him into a role as international ambassador for reactor shielding.
A scholarship is given in his name each year to a student enrolled in graduate-level studies in the field of radiation protection and shielding by the American Nuclear Society.