This thesis consisted of two computerized simulations of assembling milk from dairy farms and distributing it to milk plants, using TRUCKSTOPS, a commercial truck routing computer program. In the first simulation milk was assembled and delivered to the nearest available plant without regard to protein content, with the high-protein milk delivered to manufacturing plants. Doing so increased the fat and protein in milk delivered to manufacturing plants, and increased cheese production 2.6 percent. It also increased assembly costs and lowered fat and protein in milk delivered to fluid milk plants. The value of the extra cheese was less than the extra assembly costs and the value of the butterfat diverted from fluid milk to manufacturing plants, making the operation economically unfeasible.