Recent experience with electroless (autocatalytic) nickel coatings for the corrosion protection of mining components has been disappointing, particularly in view of their potential for certain applications. This paper presents some laboratory results concerning the corrosion resistance of various commercially available electroless nickel coatings when subjected to chloride containing waters. Porosity increased with exposure to the corrosive environment, thereby allowing galvanically enhanced pitting attack of steel substrates. The coatings with the best resistance had been plated using a strong complexing agent and an organic thiocompound stabilizer.