This wind direction indicator was of particular interest to me the night previous to this photo when the sky was partly overcast. I was trying frame shots to take best advantage of the visual effect of moving clouds. I am quite certain that the reason for which it was installed was very different. To the right is a lube oil storage tank. The light plant, seen on the extreme left of the shot is the oldest building still standing on the site. It dates back to 1922. Closer to the center of the shot, the large building in the distance just left of the wind indicator is the sulfur plant. It was installed in 1952 to extract sulfur from the acid gasses removed from sour gas by the scrubbing plant.