Frequently, bronze or aluminum disks are set in stone or concrete, or on rods driven deeply into the earth to provide a stable elevation point.
The pole may be grounded with a heavy bare copper or copper-clad steel wire running down the pole, attached to the metal pin supporting each insulator, and at the bottom connected to a metal rod driven into the ground.
A second wire is attached to a rod driven into the ground some distance away.
Long, tubular rods driven into snow to provide a quick anchor.
We'll try to construct a working platform to mine the lode, balanced on rods driven into the cliff just below the vein.
The "aerial" to send is a rod driven in the earth and the "aerial" to receive is simply another.
The lightning charge passes to wire conductors alongside the house (either inside or outside the walls), which are connected to ground rods driven into the earth about two feet from the house.
In Australia and South Africa, a house's earth cables must be connected both to an earthing rod driven into the ground and also to the plumbing or gas pipe.
The yellow hot rod driven by Paul Le Mat in Lucas' 1973 film American Graffiti shows the license plate THX 138.
