Who Excavated all of These Mines?

Over the past few weeks, I notice that I have been running a lot of quests through various mines.  For instance, I ran Stromvauld’s Mine, The Iron Mines in Sorrowdusk Ilse, and the Scondrel’s Run.  So I started to wonder, who excavated these mines to begin with?  Now we know that Stromvauld’s Mine is an active mine and in fact that is why we are heading in there, to look for the missing mining parties.  However, the Iron Mines and Scondrel’s Run are abandoned mines that are now inhabited by ogres and minotaurs, respectively. 

Looking for the gems in Stromvauld's Mine photo LookingforthegemsinStromvauldsMine_zps41b82633.jpg
Stromvauld’s mine is still actively producing rare gems.

The Iron Mines suggest that at one point iron was harvested with great quantities out of there.  I’m thinking that a clan of dwarves probably started this mine.  But what happened to them?  If dwarves didn’t set up the mine then who did.  As for Scondrel’s Run, I have no clue.  The mine has now be turned into a pirate challenge and it is hard to determine what was mined from those caverns, in either case it looks like it was picked clean, which makes sense because it is constantly full of pirates.  I wonder if the ever elusive gnome started that mine…hm..

Erd and Twotoe taking on the scorpions of Scondrel's Run photo ErdandTwotoetakingonthescorpionsofScondrelsRun_zpsf06b3733.jpg
So who created the mine for the Scondrel’s Run?

Erdrqiue looking down the tunnel from Grust's Lair photo ErdlookingdownthetunnelfromGrustsLair_zps0b09c395.jpg
Where the Iron Mines originally hallowed out by dwarves?

Any thoughts?  Thanks for reading everybody and happy hunting!!