Ironworkers Local 29 Contractors - Mechanical
| Company | Address | City | State | Zip | Phone |
| Alliance Industrial | 2420 N Hayden Island Dr | Portland | OR | 97217 | (503) 285-7100 |
| Harder Mechanical | 2148 NE MLK Blvd | Portland | OR | 97212 | (503) 281-1112 |
| Hollinger Construction Inc | 1061 Industrial Way | Longview | WA | 98632 | (360) 423-4850 |
| JH Kelly LLC | PO Box 2038 | Longview | WA | 98632 | (360) 575-3133 |
| Morgan Millwright Service Inc | PO Box 226 | North Plains | OR | 97133 | (503) 647-7474 |
| Triad Mechanical | 2133 N Argyle | Portland | OR | 97217 | (503) 289-9000 |
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