id: iron-mountain-butler-county
name: Iron Mountain WPA-1 Underground Campus
operator: iron-mountain
status: operational
location:
  country: US
  state: PA
  county: Butler County
metrics:
  capacity_mw: 15.5
  land_acres: 315
  building_sqft: 330000
first_seen: "2026-07-07"
last_updated: "2026-07-07"
confidence: medium
sources:
  - url: https://www.ironmountain.com/data-centers/locations/pennsylvania-data-center
    publisher: Iron Mountain
    note: "Operator facility page; no publication date given."
signals:
  - sig-20260706-iron-mountain-wpa1-building-sqft
  - sig-20260706-iron-mountain-wpa1-capacity
  - sig-20260706-iron-mountain-wpa1-land
  - sig-20260706-iron-mountain-wpa1-status
notes: >
  Underground campus roughly 220 feet below grade in a former limestone
  mine; 315-acre site. building_sqft ~330,000 sq ft; capacity 15.5 MW (basis
  unspecified). Only Butler County given as location — no locality resolved,
  so id uses the county place per precedence. All facts from a single primary
  (operator) source, hence aggregate confidence medium.