Take a look at
this article. It concludes:
"The FAA’s announcement, and the guidance that it has provided as a result of its review of these initial petitions, has proven Section 333 to be a viable avenue for the commercial use of UAS, and opened the door to other businesses seeking to use UAS to support their operations. Indeed, in announcing its grant of these first petitions, the FAA encouraged other businesses to petition the FAA under Section 333.
To date, the FAA has received 45 requests for exemptions under Section 333 from a variety of companies across a range of industries, including agriculture, oil and gas, GIS/mapping, construction, and real estate, as well as pipeline and power line inspectors and surveyors. If your business is considering using UAS, we can help you take advantage of this opportunity and lead the way in your industry."