International Brotherhood of Boilermakers

The International Brotherhood of Boilermakers, Iron Ship Builders, Blacksmiths, Forgers and Helpers is a trade union in the United States and Canada. It is for boilermakers and related occupations, and is affiliated with the AFL-CIO. Wikipedia*

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The International Brotherhood of Boilermakers, Iron Ship Builders, Blacksmiths, Forgers and Helpers is a trade union in the United States and Canada. It is for boilermakers and related occupations, and is affiliated with the AFL-CIO..