Students and staff at Hartvigsen School — Granite School District’s primary special education center — are opening their new building with fanfare. A dedicatory celebration kicked off Friday with a Unity Walk in which Hartvigsen students joined their peers from Taylorsville High School and Plymouth Elementary School to walk around school grounds in a display of collaboration and friendship. Hartvigsen School has been serving students with moderate to severe physical, mental and intellectual disabilities for more than 40 years.