7.8 percent in 2010. Local-currency sales growth was 7.3 percent, which included a 1.2 percent benefit from acquisitions. Foreign exchange impacts added 0.5 percent to sales. The acquisition benefit primarily related to two fourth-quarter 2010 acquisitions, namely Attenti Holdings S.A. and Cogent Inc. Attenti Holdings S.A. is a supplier of remote people-monitoring technologies used for offender-monitoring applications and to assist eldercare facilities in monitoring and enhancing the safety of patients. Cogent Inc. is a provider of finger, palm, face and iris biometric systems for governments, law enforcement agencies, and commercial enterprises.

 

3M’s security systems business led 2010 sales growth, helped by strong organic volume and acquisition growth (Cogent Inc.) that drove local-currency growth of nearly 50 percent. Corrosion protection products, track and trace products (helped by acquisition growth related to Attenti Holdings S.A.) and building and commercial services also were strong contributors to sales growth. Sales of personal protection products increased in 2010, despite negative year-on-year impacts from H1N1. Industrial minerals sales also increased for the year, helped by a strong fourth quarter of 2010. Geographically, local-currency sales growth was broad-based, led by Latin America and Asia Pacific. Europe/Middle East/Africa sales growth was led by Central East Europe and Middle East/Africa.

 

Operating income for 2010 was $709 million, with a 21.4 percent operating income margin. Operating income declined 2.6 percent, penalized by year-on-year H1N1-related comparisons, which reduced Safety, Security and Protection Services sales growth rates by approximately 6 percent year-on-year. In addition, fourth-quarter 2010 acquisition-related costs also penalized operating income. In 2009, this business segment recorded charges of $16 million related to restructuring actions, with this charge comprised of employee-related liabilities for severance and benefits. This charge was largely offset by a gain of $15 million related to the sale of 3M’s New Jersey roofing granule facility.

 

In June 2009, 3M’s Security Systems Division was notified that the UK government decided to award its passport production to a competitor upon the expiration of 3M’s existing UK passport contract in October 2010. Refer to “Critical Accounting Estimates” within “Management’s Discussion and Analysis of Financial Condition and Results of Operations” for additional discussion.

 

Display and Graphics Business (12.4% of consolidated sales):

  

The Display and Graphics segment serves markets that include electronic display, traffic safety and commercial graphics. This segment includes optical film solutions for LCD electronic displays; computer screen filters; reflective sheeting for transportation safety; commercial graphics sheeting and systems; architectural surface and lighting solutions; and mobile interactive solutions, including mobile display technology, visual systems products, and computer privacy filters. The optical film business provides films that serve numerous market segments of the electronic display industry. 3M provides distinct