sentences:  He continued to work at Hasanlu, as well as other Iranian sites including Dinkha Tepe, Nush-i Jan, and Sé Girdan; he also discovered what he believed to be the important Urartian city of Qalatgah.He was appointed acting head of the department in late 1970 and early 1971, outspoken about the museum’s acquisitions policies with respect to antiquities in light of the recent UNESCO convention, which opened for signature in November 1970.On August 30, 1972, he received his first notice of termination from the museum.