Complex sentence: William B. Dickson (November 6,1865--January 28,1942) was a common laborer in the Homestead Steel Works of Carnegie Steel at age 15 who rose to become vice president of Carnegie Steel, U.S. Steel, and Midvale Steel.
Split into simpler sentences: William B. Dickson (November 6,1865--January 28,1942) was an American business executive in the steel industry. Starting his career as a common laborer in the Homestead Steel Works of Carnegie Steel at the age of 15, he rose to become vice president of Carnegie Steel, U.S. Steel, and Midvale Steel.