An Axe to Find

Walkthrough
Accept the quest for Glover Mallory and head over to Caerellius House or Raven Rock Mine, whichever Crescius Caerellius is at the moment. Talk to Crescius and ask him about Glovers Ancient Nordic Pickaxe. He can be convinced to give the Pickaxe back.

Return to Glover Mallory and he'll give the Ancient Nordic Pickaxe to the Dragonborn.