QUINCY, Mass.--(BUSINESS WIRE)--Granite Telecommunications, LLC, a provider of communications solutions to businesses, celebrated its 12th annual Granite Day on Saturday, June 6, hosting a community event in support of Dana-Farber Cancer Institute. Thousands of community members visited Granite’s headquarters in Quincy to enjoy the fair, which included food from local restaurants, rides, games, music, arts and crafts, and other entertainment. The fair helped raise more than $550,000 for Dana-Fa