271 (1964).In 1958—the year prior to the merger—Alcoa was the leading producer of aluminum conductor, with 27.8% of the market; in bare aluminum conductor, it also led the industry with 32.5%. Alcoa p...271 (1964).In 1958—the year prior to the merger—Alcoa was the leading producer of aluminum conductor, with 27.8% of the market; in bare aluminum conductor, it also led the industry with 32.5%. Alcoa plus Kaiser controlled 50% of the aluminum conductor market and, with its three leading competitors, more than 76%. Only nine concerns (including Rome with 1.3%) accounted for 95.7% of the output of aluminum conductor, Alcoa was third with 11.6%, and Rome was eighth with 4.7%. Five companies control…