One of two men who together busted out of a minimum-security federal prison near Duluth last year has learned that six days of relative freedom in Burnsville means another 18 months of incarceration.

Gerald J. Greenfield, 68, was sentenced Tuesday in federal court in St. Paul for escaping with Michael J. Krzyzaniak, 65, from the minimum-security federal prison near Duluth on March 30, 2013. Krzyzaniak earlier had the same amount of time tacked on to the time he was serving.

Krzyzaniak and Greenfield were detected missing during a routine head count March 30. Six days later, they were captured 175 miles away at the Hampton Inn in Burnsville after authorities received a tip. A hotel spokeswoman said the two had been at the hotel since their flight, registered under an alias.

At a hearing soon after their capture, a Duluth prison camp guard said footprints in the snow showed that one had climbed a snowbank and jumped a fence and that the other had pushed open a loose gate.

The camp is described in a criminal complaint as having no "walls or fences to contain prisoners; rather, using an honor system." Inmates have access to recreational facilities, can take college courses and even "leave the confines of the institution on furlough for medical appointments."

In 1988, Krzyzaniak, of Minneapolis, skipped town as he faced trial in connection with a bogus scheme to sell $550,000 worth of U.S. veteran commemorative medallions. He was arrested seven months later in West Palm Beach, Fla., where he was setting up another telemarketing operation.

Along with the newly added time, Krzyzaniak still has about eight years to serve for bilking investors by promoting development projects that never happened, including a NASCAR-style racetrack in the Elko New Market area and a resort and housing development in Desert Hot Springs, Calif.

Greenfield, of Bloomington, was serving four-plus years for assisting a mortgage scam for the Sexton Lofts in downtown Minneapolis by helping hide profits with an attorney friend in Australia. His projected release date had been Nov. 2, 2015, before the additional time for escaping.