I noticed when looking through this mod that's their is no nether zinc or Nether Mercury. a couple common mods that add zinc are base metals and tech reborn, and base metals adds mercury..

I second Zinc ore (for use with Railcraft).

Extra Planets also implements mercury ore but it's a planet specific ore in that mod. So technically base Metals is the only mod that adds overworld mercury.

Does any mod besides Base Metals actually implement mercury? Base Metals itself is just a materials mod like Netherending Ores itself. I will look at adding zinc though since it has an actual use.