Frontier Airlines said that all four unions...

Frontier Airlines said that all four unions represented by the employee coalition have ratified the proposed acquisition of Frontier by People Express . . . Rykoff-Sexton said it completed its previously reported purchase of the Sacramento and Reno businesses of Pya-Monarch Co., a unit of Sara Lee Corp. . . . The American Iron and Steel Institute reported that steel production fell to 1.573 million tons in the week ended Nov. 9, down 0.6% from the previous week’s 1.583 million tons.