One shows the largest owners of Napa County grape acreage, currently led by:
- Laird Family Estate.
- Diageo (Beaulieu Vineyard, Sterling Vineyard, Mumm Napa Valley)
- Foster's Brewing Group (Beringer Vineyard)
- Robert Mondavi (Robert Mondavi Winery, La Famiglia di Robert Mondavi, and half of Opus One Winery)
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