Materials matter: copper resists corrosion and conducts well

https://medium.com/@ismerdntuv/soil-health-meet-electromagnetism-integrating-electroculture-with-regenerative-practices-652e401d1b53

Materials matter: copper resists corrosion and conducts well, while galvanized steel is cheaper but heavier; choose durable wood or bamboo for masts, and avoid treated lumber that may leach chemicals.