Miners can not mine through items like torches, redstone wiring etc.
Sought after blocks are controlled in the .minecraft/config/IC2.cfg file on the line start with valuableOres=, if you want to add blocks from other mods the list is a comma separated set of blocks following this pattern: blockID-Damage:ScannerValue, ; when the damage value is not specified all possible values match. [1]
blocks {
array.array.id=252
base {
appliance.id=137
microblock.id=136
}
lighting {
lampOff.id=147
lampOn.id=146
}
logic.logic.id=138
machine {
frame.id=152
machine.id=251
machinePanel.id=238
}
sensor.sensor.id=148
world {
crops.id=144
leaves.id=141
log.id=143
ores.id=140
plants.id=139
stone.id=142
storage.id=145
}
*snip*
Oh a modded server. You guys/gals might like my texture packs i create for mods check my sig for details.