Complex sentence: The first rescue excavations, conducted from 1957 to 1958, were carried out by Moshe Prausnitz working with the IDAM, who was joined by Robert Stigler of Brandeis University.
Split into simpler sentences: The first rescue excavations, conducted from 1957 to 1958, were carried out by Moshe Prausnitz working with the IDAM. He was joined by Robert Stigler of Brandeis University.