“…Scientist Borys Faibyshenko from Lawrence Berkeley National Laboratory (California, USA), with whom Vyacheslav Mykhailovych had maintained friendly relations and professional cooperation for more than half a century since the 1970s, sent sincere words of condolence to his colleagues, friends, family and friends. During his visits to the USA, I met with Shestopalov in 1993(Washington, D.C., and Las Vegas, Nevada) and 1999(San Francisco and Berkeley, CA), and in Kyiv in 2001, 2009, 2011, and 2017 Interestingly, when Shestopalov visited the Berkeley Lab in 1999, he presented a new concept of high-level nuclear waste disposal in deep boreholes. Still, it was not accepted at that time.…”