FORM 10-K

Company

MDU RESOURCES GROUP INC

Filed

March 1, 2002

Period of Report

December 31, 2001

Accession Number

0000067716-02-000023

A 10-K is a company's comprehensive annual report, required by the SEC. It includes audited financial statements, a description of the business, risk factors, and management's discussion of results. Learn more about 10-K filings →