I see that Jesse Byock’s 1995 article “Egil’s Bones” is now online. (See also this earlier piece.) The article helps to support the historical reliability of the Icelandic sagas by showing how an aspect of Egil’s Saga once considered fanciful – the protagonist’s skull’s invulnerability to axe-blows – may have a basis in fact.
As of 2005, Byock was seeking Egil’s grave for confirmation; I’ve heard nothing since, though the project seems to be active.