Copper-bonded earth rods are designed specifically to excel both in high-resistivity and saline soils—soil conditions that put most grounding systems to the test. Their distinctive composition, with high-tensile steel core and thick molecularly bonded 99.9% pure electrolytic copper overcoat, brings a number of important benefits in these types of soils. - Excellent Corrosion Resist... https://www.pioneerpowers.com/copper-bonded-earth-rod.php