cases included concern: the construction of airports, tourist villages, first class hotels, telescopes, phosphate mining mschinery, works for clinker cement, works for international waterways, construction of the Bibliotheca Alexandrina, diplomatic buildings, real estate of business concern, media production complex, etc. Issues raised are mostly related to delays, bad material or unfitness of quality, income taxes, sales tax, workmanship, contract management, social insurance premiums, damages and custom duties. Some of the awards were subject to challenge before Courts such as: the Court of Appeal, the Court of Cassation, the Supreme Constitutional Court. The challenge may succeed or fail and in both cases we introduce its findings. The names of parties are revealed in the cases of court challenges, otherwise they are kept secret.