It would seem the author knows nothing about the Copper Scroll. That scroll outlines various locations of what today would comprise an immense - and rather detailed - treasure. . . The Ark of the Covenant is not mentioned. If someone could decipher just enough of the locations to obtain a quarter of the listed bounty - at today’s prices - they might well forget all about the Ark of the Covenant!
No one has found anything of significance using the Copper Scroll. I know - I spent 10 years of my life looking for the objects, using the Copper Scroll, at Qumran, and nothing of significance has been found that were related to the scroll. Many have tried. Barfield is the latest (I guess.) I wish him success.