MINNEAPOLIS (AP) — Delta Air Lines says a vote by 700 workers who manage the parts used by its mechanics has rejected a union.

Delta says 439 of the stock and stores workers voted against a union. The International Association of Machinists and Aerospace Workers hoped to represent that group.

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Delta workers have been voting on whether to keep the unions that represented some of them at Northwest Airlines. Delta Air Lines Inc. bought Northwest in 2008. So far none of the unions have won.

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Delta fleet service workers rejected the same union last week. Flight attendants rejected a union earlier this month.

Delta has just one more union vote, for reservations and gate workers who are considering whether to keep the IAM. That vote ends Dec. 7.

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