Visit Whisky Tango Fox's Mods thread for more information.
Requires WTFCore- get it here: http://minecraft.curseforge.com/mc-mods/231301-wtfcore
Requires TextureGeneratorLib- Get it here: http://minecraft.curseforge.com/projects/wtfs-texturegeneratorlib
This is a fairly simple mod that does primarily 3 things. It generates ores in shaped veins, rather than just blobs. It adds 3 levels of ore density for each ore. And if you're running it with UndergroundBiomesConstructs, it offers an alternative method of Ore Ubification, through an over-lay-and-stick method, rather than through a double render. And, custom ore blocks from other mods can be added to this via a configuration option. Additionally, generation scales to the surface height- so ore density is maintained in mountainous biomes.
Think of it as a lite version of Dense Ores + Custom Ore Generation + Ore Ubification.