NEW YORK—Sloane & Company has been retained by Green Mountain Coffee Roasters to provide strategic financial and corporate public relations, as well as supporting a number of the company’s enterprise-level corporate social responsibility initiatives.

NEW YORK—MWW Group has added three new accounts to its media strategies practice: The Museum of Mathematics, which will open in New York in the fall of 2012, and will feature exhibits and programs that will showcase the beauty, creativity, and real world applications of mathematics; Latinum Network, which helps brands reach and catalyze the growing US Hispanic market through strategic analytics, research and peer-to-peer collaboration; and StarGreetz, a provider of customized, user-personalized, star-powered rich media messages to both online and mobile platforms worldwide.

NEW YORK—MGP & Associates PR, led by former Giuliani aide Mike Paul, has been hired by Diane & Co, the dress shop featured in Oxygen reality show Jersey Couture, to provide crisis communicatons support following allegations that the store had refused a prom dress refund to a teenager whose boyfriend was killed in a car crash.

BOSTON—Tier One Partners has added three new clients: AdReady, which creates software that empowers marketers to master online advertising; Mobiquity, a professional services firm specializing in the design, build and deployment of enterprise-class mobile solutions; and Percussion Software, which publishes a family of web content management solutions.