sentences:  al-Duri worked for the agricultural firm named Al-Thimar al-Mubaraka ("Blessed Fruits") which exported corn and sunflower seeds, and employed 10,000 workers, and was in charge of their Al-Damazin Farms project, which included 4,000 seasonal workers tending nearly a million acres (4,000 km²).An agricultural engineer named Mohammad Zeki Mahjoub met with al-Duri, at the request of Bin Laden and became the farms' Deputy General Manager.On October 17, 1993, al-Duri wrote Mahjoub a reference letter vouching for his work with the farms in al-Damazin from February 1992 until May 1993.