Generally, all the NPC's from there are dead with a few exceptions.

Here are my guesses for what happened to the "survivors". Spoilers for parts of Flames of Vengeance.

Needleman was probably down in the valley near the "Bellegar" teleporter to the top of Lovis Tower when he saw the attack coming.

Dana, Derk, Folo and Kevin might have hitched a ride on the zeppelin that took Rhode to Aleroth.

I don't know what happens to the miners you can free, but I think they're basically dead as well - there's no place they can go to escape the valley without going through the poison gas.



I think the game's story brushed over that because there wasn't anything you could have done, and you may or may not have interacted with any or all of the people in either a nice or jerkish fashion.

The developers probably killed them off BECAUSE you got attached to them, and that's a really good way to make you hate Damian.