That's exactly the study I read. One of the explanations I read for it was that grain fed cows take in more heavy metals from eating the grains. Then their milk contains some of those heavy metals, and heavy metals bond to proteins, so that when the milk is processed, and the protein is concentrated into whey, the metals become concentrated as well since they are bonded to those proteins.
Since that article, I've read several pieces disputing the article as fearmongering as well, so I'm not fully sure where I stand on the issue right now, but I eat grass fed beef and drink grass fed dairy products (milk and butter), so I suppose grass fed whey makes sense. Though... I'll probably go back to egg protein after I finish my supply of APS whey. I just seemed to digest it better.
Not sure if this will work, but here is an attempt to post the label on the APS whey:
<a href="http://s417.photobucket.com/albums/pp252/threeriverscrossfit/?action=view&current=Scan_Pic0003.jpg" target="_blank"><img src="http://i417.photobucket.com/albums/pp252/threeriverscrossfit/Scan_Pic0003.jpg" border="0" alt="Photobucket"></a>
I'm guessing it's probably the apple pectin or stevia they use that was upsetting my stomach since I've never had any problems with dairy or whey proteins in the past, and I've never seen either of those ingredients in any of my past whey.