| opcmia.org | The Operative Plasterers & Cement Masons' International Association of |
| liuna.org | The Laborers' International Union of North America (LIUNA) |
| iupa.org | International Union of Police Associations (AFL-CIO) |
| iuoe.org | The International Union of Operating Engineers |
| ilwu.org | International Longshore and Warehouse Union (ILWU) |
| ifpte.org | International Federation of Professional and Technical Engineers (IFPTE) |
| ibpat.org | International Union Of Painters And Allied Trades, Afl-cio, Clc -- One Union |
| ibew.org | International Brotherhood of Electrical Workers (IBEW) |
| boilermakers.org | The Boilermakers Union |
| bacweb.org | The International Union of Bricklayers and Allied Craftworkers (BAC) |
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