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Net consolidated sales of the Saint-Gobain Group for the first 9 months of 2001 were up 7.6% year-on-year (12.8% excluding Essilor), to EUR 22,932 million, from EUR 21,302 million for the same period of 2000.

In October 2001 a high precision measuring instrument, the world's largest and most precise ring laser gyroscope, officially came into service.