Beta-gamma autoradiography is a widely used technique for studying fission products distribution in nuclear fuel cross sections. The contribution of individual fission products involved in beta-gamma autoradiography has been studied with and without aluminum absorbers. From the experimental results it appears that beta-gamma autoradiography as applied to fuel examination is pure beta autoradiography and, furthermore, there is a strong sensitivity of the emulsion to high energy beta, such as 3.4-MeV beta emitted by 106Rh (106Ru).