Mabetex officials have denied that the company did anything illegal to obtain contracts.
He said Mabetex had obtained contracts in Russia and other former Soviet states through a good reputation.
Mr. Pressley, 23, admitted that he took bribes in exchange for assistance in obtaining contracts for a fictitious roofing company and for his votes on a fictitious insurance contract.
President Bill Clinton appointed Mr. Neal in 1996 as director of the Pentagon office of Small and Disadvantaged Business Utilization, which helps minority-owned businesses obtain contracts.
While Hikmat was detained at Bagram, the Justice Department, working with SIGAR, had filed a civil-forfeiture suit, claiming that Hikmat had paid bribes in order to obtain contracts.
Prosecutors in the case have alleged that businesses paid more than $2bn in bribes to obtain contracts with the oil company, projects that later ballooned in cost.
Prosecutors said Mr. Nasso used his ties to Mr. Ciccone in a scheme to fraudulently obtain contracts as a supplier of pharmaceuticals to the union's health plan.
Sununu's very public tie to the former President was sure to improve his chances of obtaining contracts, as Bush had to know.
In February American courts fined KBR, a construction firm, and Halliburton, its former parent, $579m over bribes paid to obtain contracts in Nigeria.
Mr. Park obtained contracts to evaluate children's disabilities, as well as to provide roving tutors called "special education itinerant teachers," or SEITs.
