Semel was a member of the Board of Directors of Massuah and for many years was a member of the Board of Governors of Yad Vashem .
The Board of Directors of Massuah is the Institute for Holocaust Studies at Kibbutz Tel Yitzhak .
Semel was a member of the Board of Directors of Massuah , the Institute for Holocaust Studies at Kibbutz Tel Yitzhak , and for many years was a member of the Board of Governors of Yad Vashem .