Dunwich Borers LLC

Dunwich Borers LLC, was a pre-War company that was headquartered in the Dunwich building in Virginia and operated Dunwich Borers quarry yard in Massachusetts.

Background
The company was known for the manufacture of industrial drill bits and accoustic drilling systems used in boring tunnels, and also operated a marble quarry. While on the surface it appears to be an ordinary mining corporation, in reality, corporate management was deeply involved in the occult, and used their operations as a front for dark rituals, as well as seeking out eldrich artifacts associated with the occult god Ug-Qualtoth.

According to cut dialogue from the original version of the Point Lookout quest The Dark Heart of Blackhall, the company was owned by Richard Dunwich, the brother of Constance Blackhall. The dialogue also mentions that both Dunwich and Blackhall's shared "obsession with the occult", hinting that the presence of the obelisk underneath the building was not unintentional.

Appearances
Dunwich Borers LLC are mentioned in Fallout 3 and Fallout 4.