Seagram's Vodka is a label that was launched in 2002 by Pernod-Ricard after the break-up of the original Seagram's Distillery. It's made with Indiana-grown grain and "mineral rich water." (Please note: even though Pernod Ricard owns the label the distillery itself is owned by Angostura. Based on recent filings with the US Tax and Trade Bureau, production facilities seem to have moved to the Canadian-owned Hiram Walker production plant in Arkansas. 
Seagram's Platinum vodka is made with the same five-column distilled process and American grain as their flagship vodka but distilled to a higher (100 pf) proof