Annex to life science facility completed at Dugway Proving Ground
Dozens of bolts hang from the ceiling that will support the massive and sophisticated ventilation system for the annex to the life sciences test facility at Dugway Proving Ground, Utah. When completed, the building will be sealed and have negative pressure, to draw all atmosphere to central points for filtering, before return outdoors. (Cropped for emphasis)

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Photo by: Photo by Al Vogel of Dugway Proving Ground. Utah. |  VIRIN: 140710-A-BB276-085.JPG