Jedidiah Handers

Jedidiah Handers is a human mining trainer inside the shop All that Glitters Prospecting Co. in Dalaran.

He was present in his shop when the city moved above Deadwind Pass, but he doesn't appear when the Dalaran is above the Broken Isles.

Quotes
Look at this mess! All of our things thrown about! Books on the floor, tools everywhere... I really whish we had a bit more warning before the entire city moved!
 * Dalaran above Deadwind Pass

And look at Dorian over there. Poor guy is still recovering.