Absolutely. Certainly, public awareness of hydraulic fracturing operations has in part led to industry's commitment to disclose. The websites that enable us to disclose were pulled together, I would say, roughly about a year before the reporting was made mandatory. Industry adopted disclosure at that time on a voluntary basis and, as I say, worked with regulators to recommend that the regulations be put in place to reinforce that and give the public assurance.
To your point about technological advancements and trade secrets, certainly the chemicals are protected under intellectual property. We can only give what the material is. We can't get into the details of that. That's reflected on the disclosure where there are intellectual property restrictions. That is on the disclosure. Other than that, all chemicals and materials are fully disclosed.
Interestingly, more and more of the materials—not to elaborate on it too much—or the chemicals that have intellectual property restrictions are the green chemicals. That's what the suppliers are.... As I mentioned, we looked at the risk, and as a company we moved towards saying that we would not accept the risk of benzine and certain heavy metals included in our fracturing. As a company we looked at that. It's still legal to use. There are operating practices that can safely manage them, as you mentioned, but we just felt that's not where we were going to go—hopefully leading the industry in some way, shape, or form.
Those newer, greener chemicals are often the ones that have the intellectual property issues associated with them, so when you see that you've got some restrictions in terms of disclosure, those are actually in many cases the greener chemicals that industry is moving towards.