The head of the union that represents grain handlers in the city is optimistic that the sale of Viterra will not have much of an impact on the company's three local elevators or the employees. Viterra was acquired by Glencore International. Steelworkers union boss Herb Daniher says however, it's not unusual for such deals to result in lay offs. Daniher says once the deal is actually finalized is when the union will try to discover what it will mean for workers.