AIRLINES

Northwest Airlines, Eagan, announced that NWA Cargo will raise its fuel surcharges in certain markets effective July 15.

PERSONNEL

Ecolab Inc., St. Paul, announced that major shareholder Henkel AG & Co. intends to sell part or all of its investment in Ecolab. In addition, the directors designated by Henkel -- Stefan Hamelmann, Kasper Rorsted and Hans Van Bylen -- have decided to resign from Ecolab's board.

Verisae, Minneapolis, named Gregory Effertz as CFO. Effertz joins the software and services company from Retek Inc.

MERGERS AND ACQUISITIONS

3M Co., Maplewood, completed its acquisition of Imtec Corp., Ardmore, Okla., a manufacturer of dental implants and tomography scanning equipment. Terms of the transaction were not disclosed. Imtec becomes a subsidiary of 3M and will be known as Imtec, a 3M Company.

NEW BUSINESS

Alliant Techsystems, Edina, was awarded a Sounding Rocket Program Three (SRP-3) contract with potential value of $250 million from the Air Force to provide launch vehicles and engineering and integration services for intercept systems and atmospheric sounding rocket experiments.

Nagasaki IPC, West St. Paul, provided Intelligent Devices Inc. more than 100 touch-screen units for Intelligent Devices' mobile data collection system to be used in South Dakota's snow plow pilot project.

DEBT AND EQUITIES

MakeMusic Inc., Eden Prairie, and Image Sensing Systems Inc., St. Paul, have been added to the Russell Microcap Index, an index of the 1,000 smallest U.S. stocks in the Russell 2000, plus the next 1,000 stocks as of the end of May.