Stacks of Infused Saronite Bars can be found littering the ground in the Pit of Saron of the Frozen Halls in Icecrown Citadel. The Infused variety have a green miasma steaming off of them. Other stacks of Saronite Bars do not have this glow. The use of five bars are required for the quest Reforging The Sword (Alliance) / (Horde), along with a drop from Forgemaster Garfrost, [The Forgemaster's Hammer], to reforge the [Remnants of Quel'Delar] into the [Reforged Quel'Delar].