In 1928 the members of the adjacent kibbutz Heftziba discovered on their grounds the remains of the Beth Alpha synagogue, dating back to the Byzantine period.The institute, which served as a school for the surrounding area, offered boarding and had an array of sports facilities and workshops enabling professional training.[citation needed] Meir Har-Zion built a farm and house, "Ahuzat Shoshana", on a hilltop just north and in sight of Beit Alfa, right next to the ruins of the Crusader castle of Belvoir.[13] BAT also expanded to become an international designer and manufacturer of special purpose vehicles for the military, law enforcement, and government and private sectors.According to The Guardian, BAT "developed a profitable industry selling anti-riot vehicles" to the apartheid regime in South Africa "for use against protesters in the black townships".[16] Since the 1930s a kibbutz member, Hanka Lazarson, was engaged in vegetable breeding; including: cucumber, onion, garlic, aubergine and cauliflower.[17] When irrigation canals were being dug in 1928, an ancient mosaic was unearthed on Jewish National Fund land on the grounds of Kibbutz Hefzibah.Levi died from a stroke in 2008[22] and was buried at the kibbutz, with eight generals carrying his body, top government officials, and hundreds who knew and worked with him in attendance.[25] Gabriel "Gavrush" Rapoport (1924–2001) was a Palmach and IDF combat veteran, who helped create Israel's famed heavy equipment rescue unit that has saved lives around the world.[27][28][29] Frankel rose to fame with the publication of her trilogy Shaul ve-Yohannah (Saul and Joanna, 1956–1967), which depicted Jewish life in prewar Germany.