James J. Hill's North Oaks Farm, Dairy Building

In the James J. Hill's North Oaks Farm Dairy Building, railroad magnate James J. Hill

James J. Hill

James Jerome Hill , was a Canadian-American railroad executive. He was the chief executive officer of a family of lines headed by the Great Northern Railway, which served a substantial area of the Upper Midwest, the northern Great Plains, and Pacific Northwest...

installed a DeLaval

DeLaval

DeLaval is a Swedish company, split in 1991 from Alfa Laval, which was founded in 1883 by Gustaf de Laval and Oscar Lamm. The company is a leading producer of dairy and farming machinery...

separator and barrel churns, which automated the production of butter, using centrifugal force powered by a steam engine. The building, listed on the National Register of Historic Places

National Register of Historic Places

The National Register of Historic Places is the United States government's official list of districts, sites, buildings, structures, and objects deemed worthy of preservation...

, is located in North Oaks

North Oaks, Minnesota

North Oaks is a suburb north of Saint Paul in Ramsey County in the U.S. state of Minnesota. The population was 4,469 at the 2010 census.Formerly a gated community that now posts private access signage, all land is owned by homeowners with the North Oaks Home Owners Association maintaining all...

, Minnesota

Minnesota

Minnesota is a U.S. state located in the Midwestern United States. The twelfth largest state of the U.S., it is the twenty-first most populous, with 5.3 million residents. Minnesota was carved out of the eastern half of the Minnesota Territory and admitted to the Union as the thirty-second state...

. The operation was a forerunner of the modern commercial butter-making industry.

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