Attachment D - 4850-40 Electrical Panel.pdf

The images show electrical panels for a spray chamber located at the 4850 Level, specifically labeled as "MPZ SPRAY CHAMBER" and "480VAC PANEL SPRAY CHAMBER". The panels are marked with multiple warning labels indicating electrical hazards, voltage levels (480 volts/120 volts), and restrictions on personnel access. The panels appear to be mounted on a concrete or stone wall, with yellow and red connectors/cables visible. Warning labels highlight electric arc flash hazards and specify that only authorized personnel can relocate or interact with the equipment. The panels seem to be part of an electrical infrastructure for a specialized scientific or industrial facility, likely related to the Thin Sprayed on Liner (TSL) application project at the Sanford Underground Research Facility (SURF) in Lead, South Dakota.