Mayo Clinic is putting its stamp on another large Rochester building.

On Friday, Mayo Clinic purchased the former mail processing center at 3939 Valleyhigh Drive for $2.11 million from the U.S. Postal Service.

The U.S. Postal Service closed the 72,662-square-foot facility in January, when it transferred mail processing to the Twin Cities.

USPS listed the 18-year-old building for sale for $2.9 million. It described the building as "constructed of pre-stressed concrete and steel frames for high volume load distribution and contains a total of 23 dock doors; 10 overhead doors, 12 semi-truck docks and one grade door." The facility is suitable for use as a warehouse, for distribution or for light manufacturing.

Mayo Clinic officials declined to reveal plans for the building..

"The decision for what the building will be used for has not been finalized," Mayo Clinic spokeswoman Kelley Luckstein said Monday.

This adds to the number of facilities, most originally built for other uses, that Mayo owns in that Northwest Rochester area.

The purchase reinforces a statement quoted in the Wall Street Journal in 2006, "If you have a big building in Rochester, Minn., the first call is to Mayo and the second call is IBM."

That quote referred to Superior Drive Support Center, the Mayo Clinic building near the former postal center. The center, which houses Mayo Medical Laboratories, is at 3050 Superior Drive NW. Construction is underway to add a 66,000-square-foot, two-story addition on the south side of the complex.

Mayo Clinic moved into the Superior Drive Support Center in 2004. By 2011, about 800 employees worked at the facility. It originally was built by electronics manufacturer Celestica Inc. in 2001.

Mayo Clinic leased the property for eight years, then purchased it for $18.5 million in 2012.

Mayo also owns the Mayo Support Center, which houses Mayo Clinic's Special Purpose Processor Development Group, at 4001 41st St. NW. That building was originally built by Western Digital as a development center, with a state-of-art clean room, though it was never occupied by the computer disk maker. Mayo bought the building in 2000.

In 2007, Mayo Clinic also bought the nearby JDS Uniphase Corp. plant at 3434 Technology Drive NW for $3.6 million. The 40,500-square-foot plant closed in 2006, three years after it opened.

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