Sounds a good idea, like a lightning conductor to sap away any RF.
Although, would earthing them turn them into antennae!?
Lead is probably the best option as it's the densest stuff you can
buy, makes you wonder how the A1200's thin aluminium shield filled
with holes (and the shield on a microwave door) can block radiation.
Ferrite and graphite are other good blockers, and weigh far less than
pure lead.