benonemusic writes: Though fracking fluids are 90 percent water, and 9.5 percent "proppant," which typically includes treated sand, chemicals that make up the remaining 0.5 percent can add up considering the tens of millions of gallons of water used in fracking. Representatives from the natural gas industry, chemical companies and nonprofit organizations came together at a conference to discuss ways to reduce the number of chemicals used in fracking and develop environmentally safer alternatives.
You can bring any calculator you like to the midterm, as long as it
doesn't dim the lights when you turn it on.
-- Hepler, Systems Design 182