pas vraiment tapis antistatique ici

"Earth Mats are metal mats that are installed underground to form a very good ground (usually for extremely good lightning protection, or for extremely good ground systems required for EMI testing).

It is usually required to dig up the ground to a depth, the fill dire on top of the mats.

An array of ground rods driven into the ground is a better technique.

The material is usually copper, but other materials can be used if the soil is highly corrosive. The higher the conductivity of the material the better.

Two examples of earth mat materials are provided in the link below."
http://answers.yahoo.com/question/index?qid=20090107214608AA...

Lattice copper earth mats

Family : Lightning Conductors
Category : Earthing

The earth mats are used to improve the earthing points where burying
ground rods is not possible.

* Tinned copper tape 30x2* or stretched copper.
http://www.indelec.com/catalogue/21-68-Lattice-copper-earth-...

"Grilles de terre

Famille : Paratonnerres
Catégorie : Prises de terre

Les grilles de terre sont utilisées pour l’amélioration des prises de terre, lorsque la nature du terrain ne permet pas l’enfoncement de piquets.

* Ruban cuivre étamé normalisé* ou cuivre déployé."
http://www.indelec.fr/catalogue/21-68-Lattice-copper-earth-m...