This map of the historic Chevron Refinery in Richmond, CA is created from FLIR thermal imagery collected from an aircraft. Using a thermal camera allows collections at night as well as through fog and haze. Ensuring there are no leaks, changes in terrain, or physical damages to oil refineries is especially critical to seismically active areas like Northern California. In this example you can also make out tracks on the infrared map that are not visible on the color map. Moving equipment disturbs the groud below allowing for a visible differential in temperature using a infrared camera such as this.