The electrical conductivity of the neutron star crust is calculated with accurate treatment of the electron state mixing at the vicinity of the Brillouin zone boundaries. The mixing is known to be important at low temperatures, but the previous model calculations by Gnedin et al. [MNRAS, 324, 725, 2001] leads to order of magnitude overestimation of the electrical conductivity at inner crust at T<10^7 K. A simple approximation for the electrical conductivity is constructed.

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