original_query: What role did Coulby play in the merger of United Alloy Steel and Central Steel Company?
query: What role did Harry Coulby play in the merger of United Alloy Steel and Central Steel Company?
answer: Harry Coulby, as chairman of United Alloy Steel's board of directors, helped engineer the merger of United Alloy Steel and Central Steel Company into the new Central Alloy Steel Company in July 1926.