In Vgmmodb there is a quest "Updating Kolar" for Bordinar's Cleft Chunk. Seems originaly the path for Coppermend's Delving quests was 1. Cleaning out Coppermend's Delving. 2. Udating Kolar 3. Dispatching the team. Stolen Demolitions and Scortch slate quests where the side quests here.