Dairy cows come in from pasture to be milked at Aurora Organic Dairy in Dublin, Texas. An organic rule that requires livestock have "access to pasture" caused big problems for the dairy, but they insist their cows do occasionally graze. "We all are going to benefit by a more clear rule," said Clark Driftmier, spokesman for Aurora Organic Dairy, which has 4,200 dairy cows. June 7, 2006.