Complex sentence: He was deeply involved in this strike as well: his interests included the Reading Railroad, one of the largest employers of miners, and he had installed George Baer, who spoke for the industry throughout the strike, as the head of the railroad.
Split into simpler sentences: He was deeply involved in this strike as well: his interests included the Reading Railroad, one of the largest employers of miners. He had installed George Baer, who spoke for the industry throughout the strike, as the head of the railroad.