(Wines&Vines) - Producing nearly 70 million cases of wine each year between them, The Wine Group and Trinchero Family Estates take up two of the the top four spots on Wines Vines Analytics’ list of the top U.S. wine companies. On Aug. 17, bottling and production specialists from these California wine producers will share some of the challenges and solutions involved with getting millions of gallons of wine out of barrels and tanks and into the hands of consumers.