Crown's casting were for the most part designed for operation in the "hot part" of the gas turbine engine. The company worked from designs prepared chiefly by aircraft engine manufacturers. These manufacturers, in their endeavor to obtain greater thrust, designed parts that would function at engine operating temperatures ranging to 2,150 degree Fahrenheit. The high temperatures required the use of precision casting for blades and vanes. The techniques and know how involved in casting operations were important, and the commercial success of such an operation was in large measure dependent upon achieving a low ratio of rejects. Crown's constant emphasis on quality and technical excellence had established a high level of confidence among its customers. For adherence to a rigid standard of performance and quality, it had been selected to participate in the majority of United States jet engine programs in the past 10 years. (Exhibit 1 provides information on jet engine production in the United States.)