Got this excellent link from Charlie29 on Stockhouse ...
Halliburton Company Analyst Meeting
Wednesday, November 10, 2010 8:00 a.m. CT
clic on webcast and move to the 1:16:00 time part
http://ir.halliburton.com/phoenix.zhtml?p=irol-eventDetails&c=67605&eventID=3491585
-recycling 95% of frac fluids with non-chemical treaments
-Patented frac fluid system made of ingredients sourced exclusively from the food industry