We report further resistivemeasurements under pressure of samples of iron from multiple sources. The normal state resistivity of ε-iron varied as ρ0 + AT5/3 at low temperature over the entire superconducting pressure domain. The superconductivity could be destroyed by mechanical work, and was restored by annealing, demonstrating sensitivity to the residual resistivity ρ0. Thereis a strong correlation between the ρ0 and A coefficients and the superconducting critical temperature Tc. Thecritical field Bc2 corresponding to the maximum Tc was found to be 0.73T, implying a coherence length of about 20 nm, i.e. slightly shorter than the electronicmean free path. Within the partial resistive transition there was a significant current dependence, with V (I ) = a(I − I0) + bI2, and a _ b, possibly indicating flux-flow resistivity, even in the absence of an externally applied magnetic field.