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UA union halls in Massachusetts

5 UA halls in Massachusetts.

  • UA Local 4 — Worcester, MA · Plumbers & Pipefitters · 508-835-1150
  • UA Local 12 — Boston, MA · Plumbers & Pipefitters · 617-288-6200
  • UA Local 104 — Springfield, MA · Plumbers & Pipefitters · 413-594-5152
  • UA Local 537 — Boston, MA · Plumbers & Pipefitters · 617-787-5370
  • UA Local 550 — Boston, MA · Fire Sprinkler Fitters · 617-323-0474

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