Sisecam, a glass manufacturer, agreed to acquire a 60% stake in Ciner Resources, a natural soda ash producer, from Ciner Group, holding company for Ciner Resources, for $450m. “With the extra capacity … we are expected to be one of the most powerful players in the natural sodium carbonate field, which we believe will be one of the sectors of the future,” Ahmet Kirman, Sisecam President.