[3] His connection with Chabad started in 1928 when the sixth Lubavitcher Rebbe, Rabbi Yosef Yitzchak Schneersohn, lived in Riga.
[11] In 1942, He accompanied Rabbi Yosef Yitzchak on his trip to Chicago, and in 1947, he sent him to France, England, and Germany on several fact-finding social and educational missions.
[11] In the 1950s and 1960s, Rabbi Menachem Mendel sent him numerous times to Russia, to retrieve manuscripts and to strengthen the spirits of the Jews behind the Iron Curtain; to South Africa for Jewish communal matters; to the Suez Canal for the printing of the Tanya; and to Israel for communal matters and meetings with dignitaries and political figures.
[12] Mindel recorded a great deal of Chabad history and helped edit the memoirs of the sixth Lubavitcher Rebbe, Rabbi Yosef Yitzchak.
[4] Mindel authored works published by Chabad's Kehot Publication Society including the first official translation of the Tanya in English.