DULUTH, MN (KDAL) - A private assessor who contracts with 24 townships and one city in St. Louis County has been suspended for 90 days.  The Minnesota Department of Revenue began an investigation after concerns were expressed by the County Assessor regarding the work of Jan Jackson.  According to findings by the Minnesota Board of Assessors, Jackson was faulted for missed new construction, incomplete assessments and a failure to meet professional expectations between 2010 and 2012.