The cranberry growers formed a cooperative many years ago to achieve economies of scale for the processing and sale of their cranberries. In that way they can concentrate their efforts on growing and harvesting cranberries as efficiently as possible while they leave the processing and selling to professional operations and marketing managers. During the two-month harvesting season, growers truck their berries to the nearest processing facility. Trucks arrive at the facility, wait their turn to have their berries graded and weighed, and then dump them into holding bins. If all the holding bins are full, the trucks have to wait until space in the bins opens up. After dumping, the trucks return to the farmer. Once the berries are in bins, the berries proceed through the plant. The plant makes them ready for sale to retail outlets or to juice or sauce producers. The plant can process up to 600 tons of berries per hour assuming there are 600 tons available to process. If there are more than 600 tons, the excess will be "carried over" to the next hour. If there is less than 600 tons, the plant will of course only process what is there. Trucks arrive at