I randomly picked up the Colorado Springs Style magazine. Amongst the night life and restaurant guide is a drone article (Ascent: Unmanned Aircraft Prepare to Fly High). From the article:
"On a macro level, energy giants like BP have experimented with unmanned aircraft since 2006. UAVs have been used to check more than 300,000 miles of the company's natural gas pipeline. They also serve as a valuable environmental tool - monitoring the movement of marine mammals in the Alaskan seas near BP's offshore drilling operations.
The low cost to fly commercial or industrial UAVs is a powerful driver."