Supplying power  to the people Donaldson is a key player in the booming gas turbine business – an industry that’s striving to keep pace with the world’s immense demand for power. We entered this market more than 30 years ago with the first self-cleaning filter system and today hold the leadership position in air filtration systems worldwide working with all of the makers of large and small turbines, includ- ing General Electric, Siemens Westinghouse and Solar. We experienced yet another record year in 2001 with sales up more than 66 percent over last year. From permanent solutions like gas turbines to backup power sources, Donaldson is uniquely positioned to capitalize on the insatiable demand for energy with filtration technology that protects a broad spectrum of power generation. The next chapter of this unfolding power story centers on fuel cells – the energy- saving and environmentally sound power source that will revolutionize the way we view and use energy. Utilizing hydrogen and oxygen, the only byproducts of fuel  cell energy are water and heat. Though  the technology has been around for more than a century, it’s now on the brink of  commercial viability, and Donaldson’s Fuel Cell Contamination Control ™ (FC 3 ™ ) business is playing a key role. For example, diesel generators are provid- ing much-needed backup power to com- puter centers, office buildings, hospitals and municipalities and are often the sole sources of power for remote locations  in the Third World. As the key supplier of  air and liquid filters to Caterpillar’s diesel generator business, the industry leader,  our diesel generator business was up  28 percent over last year, and we expect  20 percent annual growth over the next  five years. Manufacturers are using our patent-pending air, chemical and noise filtration technology on fuel cells that power mass transit buses, which are expected to be introduced in 2002. Future applications are likely to include passenger cars, residential power genera- tion and portable devices including cell phones and laptop computers. The possibil- ities for the use of fuel cells are vast, and Donaldson’s FC3 systems will be there ensuring their reliability and performance. We’re keeping the  LIGHTS on