sentences:  Then, through the intercession of Albert Einstein, she obtained a teaching position at the Instituto Politécnico Nacional in Mexico City and later at Universidad Michoacana de San Nicolás de Hidalgo But since conditions in Mexico made research extremely difficult for her, she seized an opportunity to move to the United States in 1944.In the United States, Blau worked in industry until 1948, afterwards (until 1960) at Columbia University, Brookhaven National Laboratory and the University of Miami.At these institutions, she was responsible for the application of the photographic method of particle detection in high-energy experiments at particle accelerators.