The experiences of murdered victims of Nazi persecution perished with them. In this lecture, Gabór Tóth will discuss the ways text and data mining technology has helped to recover fragments of these lost experiences out of oral history interviews with survivors. He will also demonstrate how a data-driven anthology of these fragments have been built. He will begin the lecture by situating the challenge of uncovering lost experiences in historiography, and then demonstrate how text and data mining techniques have been applied to recover fragments of lost experiences from a big corpus of English language interviews in the collection of the United States Holocaust Memorial Museum, the USC Shoah Foundation and the Yale Fortunoff Archive for Video Testimonies.