from:
http://forums.lotro.com/showthread.php?&postid=3447253
Scholar instances - zigzag road between 21st & Crossroads
Ore - Red Horn Lodes near Chittering Hole
Wood - Just north of the Nud-melek entrance in Zelem-Melek
The ore instance has anything from Khadzad-tin to iron and are just normal nodes so I'd imagine they have the same chance for a flake.
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Scenario
The Lord of the Rings Online Team
Turbine, Inc.
Join Date: Jul 2006
Posts: 595
Re: 'Daily' crafting instances
The Stage-locks are in place only to govern the resources within the instances. Otherwise, these spaces behave just like instances such as Carn Dum or Urugarth (you can go in whenever you want, you just won't be able to get the rewards until your locks are up).
And yes, the monster load-outs for the spawns do have a chance to vary between isntance runs.