Corporations: Du Pont's Troubled Dynasty

"Du Pont has been on a plateau for the past few years. It is at a high altitude, but it is still a plateau." This judgment of the recent growth of the world's largest chemical company comes from Charles Brelsford McCoy, 60, president of E. I. du Pont de Nemours & Co. McCoy betrays a hint of nervous candor not often shown at the 167-year-old firm, where fluctuations in corporate fortunes often have been shrugged off as mere ripples in the stream of its history. Lammot du Pont Copeland, now 64, who moved...