Magnetoresistance measurements on metallic amorphous alloys constitute a good tool to study Anderson localization effects in three dimensional systems. The authors have performed measurements under high magnetic field (up to 32 T) on superconducting alloys (CuZr) and normal ones (VSi). They discuss the accuracy of theoretical models in presence of high field. They could determined the frequencies of inelastic and spin-orbit scatterings even when the spin-orbit coupling is strong