In 1904, the steamship General Slocum caught fire in the East River, killing 1,021 people on board. In 1911, the <answer>Triangle Shirtwaist Factory</answer> fire, the city's worst industrial disaster, took the lives of 146 garment workers and spurred the growth of the International Ladies' Garment Workers' Union and major improvements in factory safety standards.
In what building did the city's deadliest industrial disaster occur?
Triangle Shirtwaist Factory