(Bloomberg Business) -- After golf ball–sized hailstones battered vines at Château d’Issan in Bordeaux for two years in a row, managing director Emmanuel Cruse was in the market for something—anything—that might protect his grapes. That’s when he decided to try a device that promises to prevent hailstones from forming, Bloomberg Markets reports in its April 2015 issue. Different types of hail cannons, as they’re known, have been around for more than a century in France, even though it’s far from clear they do what they’re supposed to do.
“We had to do something,” Cruse recalls. “Storms destroyed 70% of our grapes in 2008 and 2009. Each of those years, we produced less than 6,000 cases of wine,” compared with the typical 19,000 cases. The total financial loss to this third-growth estate in the Margaux appellation was almost €3 million ($3.4 million), Cruse says. Insurance paid out just one-fifth of that.
So Cruse invested €150,000 in two cannons that are now permanently installed in his vineyards. They’re linked to a radar system that automatically sets them off when it detects an approaching storm. A blast—a loud boom followed by a reverberating whistling sound—goes off every four to six seconds. Cruse gives his neighbors cases of wine to make up for the noise pollution.
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