Complex sentence: Homer then escorts him to see a steel mill to see hard work, however much to his surprise and dismay, the entire workforce is gay and that during breaks, The Anvil, a gay disco, appears.
Split into simpler sentences: Homer then escorts him to see a steel mill to see hard work. However, much to his surprise and dismay, the entire workforce is gay, and during breaks, The Anvil, a gay disco, appears.