This issue of "Solid Ground" talks about ground fault circuit interrupters (GFCIs), why they are necessary, and how to troubleshoot GFCI-protected circuits.
All mine sites have grounded electrical systems, so that in the event of a lightning strike or utility overvoltage or ground fault, the current would be able to find a safe path to earth or the neutral of the transformer.
Reassessing airport tower lightning protection systems with checklist for ensuring reliable lightning protection, with aid of ground resistance
Expert, Chuck Newcombe, revisits techniques from 1963 for testing the electrical bonds in a grounding system and compares them with today's tools and methods.
Earth ground testing definitions and methods: grounding and bonding, purpose of the earth ground, Fall of Potential test, stakeless ground testing