From Halopedia, the Halo wiki
The Kolaar Manufactorum is a forge located in the Sangheili state of Vadam, on the Sangheili homeworld of Sanghelios. The forge produces a variety of equipment for both civilian and military forces allied with the state of Vadam, including the HELIOSKRILL-class Mjolnir armor used by the SPARTAN-IVs and the Type-57 Phantom used by various Covenant remnant factions. Following the Human-Covenant War, Sangheili and United Nations Space Command scientists collaborated in an attempt to discover how the blamite, from Sanghelios' moon of Suban, functioned. The result from the research was listed as inaccessible by the Office of Naval Intelligence. The forge is likely named after, or located in, Kolaar Mountain.
List of appearances