Say Cheese! Dimock Cheese in Dimock, South Dakota to Celebrate 86 Years with a Celebration on SaturdaySay Cheese! Dimock Cheese in Dimock, South Dakota to Celebrate 86 Years with a Celebration on SaturdayDimock Cheese, the oldest cheese plant in South Dakota, will have a party this Saturday to celebrate 86 years.Karla BrownKarla Brown