Government in Grindstone, PA Government Offices CityRR 1Grindstone, PA, 154427242461910Government CityGovernment OfficesMonongahela City OfficesUnemployment Office Redstone Township Board-Supervisors225 Twin Hills RdGrindstone, PA, 154427242461910City Village Township GovernmentJeannette City HallRedstone Township Board Of SupervisorsTownship Of Show MoreSee AlsoCity, Village & Township GovernmentGovernment Offices