Arc Pylon Instructions is a written note found in The Brigmore Witches.
Be cautious with this equipment. It is very delicate and requires a skilled touch to operate. It is also quite lethal, so if you do not follow the proper procedures you will cease to exist in the wink of an eye. Acquiring this technology took a great deal of politicking and expense, so I repeat: do not be reckless with it. Once the system is set up and operational we will never see a Dead Eel darkening our doorway. The Mill will become an impregnable fortress. Report any technical issues to me.