Apparently, Burning NH4Cr2O7 With HgSCN Opens A Portal To Hell. | IFLScience Posted on November 9, 2014 by tonybarraza so that’s where the 4th of july snakes went. via Facebook http://ift.tt/10Dv8cF Share this: Share on Facebook (Opens in new window) Facebook Email a link to a friend (Opens in new window) Email Print (Opens in new window) Print Share on X (Opens in new window) X Like Loading... Related