At the end of the 1970s, James Dyson, frustrated by the way his old-fashioned vacuum cleaner became blocked and lost suction, developed a vacuum cleaner that would not lose suction. Production began in 1993. In the research and development centre in Malmesbury, UK, 700 engineers and scientists worked hard to develop new products and technologies, and to question and improve existing ones. The centre also developed products like the Dyson Airblade™ hand dryer, which dries hands hygienically without heat in only 10 seconds, and the Dyson Air Multiplier™ fan without rotor blades that generates an uninterrupted stream of air without unpleasant buffeting. Dyson employs 2,500 members of staff worldwide and exports to 50 countries.