PNC Park workers authorize strike
PNC Park Ushers Union, Pirates avoid strike
PNC Park ushers, ticket takers, ticket sellers go on strike, announce plans to picket outside Pirates' next home game - CBS Pittsburgh
Pittsburgh baseball stadium workers, Duquesne University police officers vote to strike
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15. Pittsburgh, PA
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PNC Park workers authorize strike
Nationals Look for Fresh Start at New Stadium - The New York Times
PNC Park Ticket Ushers Settle Union Contract for $13.10-an-Hour – $1 Hot Dog Night Called at PNC Park for 4/20 – Payday Report
PNC Park ushers, ticket takers union votes to strike - Pittsburgh Business Times
MLB Twitter reacts to PNC Park employees going on strike, will picket outside Pittsburgh Pirates game: Who will help seat the 400 fans?
