Apologies if this has been posted before.
But i found this article interesting. http://www.marketsandmarkets.com/PressReleases/proppant.asp
Now if expectations of the 'Proppant Market to be worth 19Billion by 2019' do come true, im not a mathematician but if this little baby manages to penetrate into a small slice of that share, that to me equals big bickies. I just didn't realise there was that much money in this stuff!