<a href="https://en.wikipedia.org/wiki/Four_Corners_Generating_Station" class="extiw" title="w:Four Corners Generating Station">Four Corners Generating Station</a>, San Juan County, New Mexico, USA.<br>
Caption:"Power plant, NW corner of New Mexico. Photo was taken prior to installation of emission controls equipment for removal of sulfur dioxide and particulate matter.
NPS
circa 2005 <div style="display: none;">date QS:P,+2005-00-00T00:00:00Z/9,P1480,Q5727902</div>
United States National Park Service (NPS). "<a rel="nofollow" class="external text" href="https://web.archive.org/web/20050124221758/http://www2.nature.nps.gov/air/pubs/Core_Slides/sources.htm">Air Quality Core Slides: Sources of Air Pollution</a>" (archived URL)