I’m curious to what would work other than a Farraday cage.
Would being underground, say in a cave, bunker, or fallout shelter protect one’s electronic gear or electrical conductors? If so, how much concrete and earth does one need as protection?
How about a nice, deep cave!
Emp is line of sight. Under ground would provide some protection but it depends on the strength of the emp signal
“Would being underground, say in a cave, bunker, or fallout shelter protect one’s electronic gear or electrical conductors?”
No. in “nominal” soil conditions you’d need to be between 100 and 200 ft in depth to be sure you met the MIL SPEC.
However, there are exceptions. For instance, if you are under 200ft of granite, you will not get significant shielding effect, because granite (or dry sand) is very low conductivity and hence, does not significantly dissipate an EMP.