used. Mr. Werner compared hauling charges by year, by State, and by milk production. From comparisons of these data, Mr. Werner concluded (1) hauling rates were slightly lower in 1999 than in 1998, (2) hauling rates were lower near large urban areas and areas of intense milk processing, and (3) hauling rates of larger volume producers were lower than those of smaller volume producers.

Analysis of Hauling Charges and Producer Milk by Location and Size-Range of Production, Pacific Northwest and Southwestern Idaho-Eastern Oregon Federal Orders, May 1997 and 1998 [PDF] - In a staff paper released by the Office of the Market Administrator in Seattle, Washington, hauling charges and milk production for over 1,500 producers whose milk was pooled on the Pacific Northwest or Southwestern Idaho-Eastern Oregon orders in May 1997 and 1998 were examined. It was found that hauling rates were lower near large urban areas and areas of intense milk processing, and tended to be lower for larger volume producers.

2001 Milk Production [PDF] - In its February 2002 Marketing Service Bulletin, the Office of the Market Administrator in Lenexa, Kansas, presents data showing milk production in 1990-2001, by State, and in total and per capita to demonstrate how milk production has changed over time and varied among regions