Some of them are quite bad chemicals. You certainly wouldn't want to have them in your drinking water. They're carcinogenic. They have all sorts of things. You said you use a considerably smaller number of them.
The question has two parts. First, what is the number of chemicals you use in your fracking fluid right now? Are any of them carcinogenic, and do you make them public? Do you put the list out into the public?
This has been a challenge, because some companies have simply not been releasing the names of the chemicals being used, thereby causing public concern.