Kammala wannan jumlar: A cikin 1949 van Berchem ya yi tafiya ta biyu zuwa Algeria kuma shekara guda daga baya ya fara aikin bincike zuwa Sedrata. An bi shi ta hanyar binciken binciken ilimin kimiyya guda biyu: a lokacin na farko, wanda ya faru daga ƙarshen 1950 zuwa farkon 1951, ta yi amfani da kayan aikin ilimin kimiyya na sama don bincika girman shafin tare da tituna da tashoshi. An kuma gudanar da binciken ruwa. Ƙarƙashin ƙasa da aka yi ya gano wani babban gini da aka yi wa ado da ginshiƙai da ƙawaye. Yaƙin neman zaɓe na biyu, wanda aka yi daga ƙarshen shekara ta 1951 zuwa farkon shekara ta 1952, ya gano wani gidan da aka yi wa ado mai kyau. An aika da akwatuna guda hamsin na abubuwan da aka gano zuwa Algiers. Koyaya, van Berchem dole ne ya daina aikin gaba ɗaya bayan farawar
Juyin Juya Halin Aljeriya a shekarar 1954. An buga babban ɓangaren binciken ta ne kawai bayan mutuwarta a cikin 2017.