The following is taken directly from Peace Corps Wiki / Guinea:

From the initial group in 1962 to the present, a total of more than 1,000 Volunteers have served in Guinea. After the program was suspended in 2009, response volunteers returned in December of 2010, and 22 secondary education (math, physics, chemistry, and English) volunteers arrived in July 2011 to restart the program. In December, approximately 30 extension volunteers (public health, agroforestry, and small enterprise development) will arrive. Guinea is in the process of rebuilding the program.

 

The History of the Peace Corps in Guinea

The following is taken directly from Peace Corps Wiki / Guinea:

Peace Corps signed a cooperation agreement with the government of Guinea in 1962, which forms the basis for our current country program. The first Volunteers arrived in Guinea in 1963. However, in 1966, relations between the United States government and the government of Guinea soured, and the Guinean government asked Volunteers to leave. Peace Corps was invited back in 1969, but again relations between the two governments deteriorated, and Volunteers left in 1971. Soon after President Sekou Touré’s death in 1984, Peace Corps was asked to return once again to Guinea. Because of demonstrations in early 2007, the program was suspended for a number of months. It was reopened later that year. In 2009, the program was again suspended until December of 2010. The program is in the process of being rebuilt with education and extension volunteers (public health, agroforestry, and small enterprise development)

You can find out more about the history of the Peace Corps in Guinea at Peace Corps Wiki / History of the Peace Corps in Guinea.