The announcement did not say who would head the new firm if the deal were completed.
This is the largest project ever awarded to an American firm headed by a woman.
He headed the firm until 1985 and continued working until a few weeks before his death.
The company is among the top 50 firms headed by women, with sales last year totaling $240 million.
He headed the firm when it started producing the first chocolate bars in 1847.
Henry headed the firm from 1873 and was the first to hybridise wheat.
E. V. Lucas headed the firm from 1924 to 1928.
The founder's son, also named Peter Kiewit, headed the firm from 1924 until his death in 1979.
She headed the firm until 1998, when she relocated to New York.
Lars thought, and I head the firm: I employ this woman.