Robin is president of American Retroworks Inc., a consulting and recycling services organization specializing in reuse, repair, and recycling used goods such as electronics and household goods, both domestically and for export. American Retroworks has just reopened a reuse facility in Middlebury, Vermont, called Good Point Recycling.
Ingrenthron was Director of the Massachusetts Recycling Program at the state's Department of Environmental Protection before accepting a short-term promotion to Deputy Director of Consumer Programs at DEP in 1998.

Robin has led two private not-for-profit recycling organizations, and was vice president of ElectroniCycle Inc. during its two-year growth from a TV repair shop to one of the largest CRT recyling companies in the U.S.

He was both a volunteer and a country training consultant for the US Peace Corps (1984-86). During September and October 2002, he consulted to the Guangzhou Electric Appliance Research Institute (GEARI) concerning recycled copper scrap operations in China.

Robin has a BA degree in international relations from Carleton College and an MBA from Boston University's Public Management Program.