The mod is pretty straight forward: Use gravel to make iron ore. The iron ore crafted can also be used as a weapon to fight the undead.
How to install Iron Ore from Gravel Mod:
- Download and install Minecraft Forge.
- Download the mod.
- Go to %appdata%.
- Go to .minecraft/mods folder.
- If the “mods” folder does not exist you can create one.
- Drag and drop the downloaded jar (zip) file into that.
- Enjoy the mod.