found: Milestones in rock engineering, 1996:pref. (Z.T. Bieniawski; Zdzisław T. Bieniawski; b. Oct 1, 1936 in Krakow, Poland; studied archit. engr. and shipbuilding in Poland; B.S. in mech. engr., Witwaterstrand Univ. in Johannesburg, S.A., 1961; in America Z.T. stands for Richard (Ryszard); middle name Tadeusz; became known as Dick; rec'd. doctorate in rock mechanics in 1968; accepted professorship in mineral engr. at Penn. St. Univ. in 1977 and emigrated to U.S.; reverted to Richard; prefers to be referred to as Professor, not Dr. or Faculty Member)
