The sanctions barred the transfer of sensitive satellite systems for two years at a cost of hundreds of millions of dollars to American business.

The sanctions would bar the Government or United States companies from doing business with the agencies involved.

Previous sanctions had barred the sale of arms and restricted financial transactions.

The sanctions barred the sale of arms and fuel to Unita.

The sanctions barred most trade with South Africa, except for strategic minerals, and banned new investment there.

The sanctions also bar the sale of some military equipment, services or technologies to the companies or their subsidiaries.

The sanctions would have barred Japanese companies from bidding on some Federal construction projects.

The sanctions, which come three weeks before Zimbabwe's presidential election, will bar Mr. Mugabe and 19 others from traveling to European Union nations.

The new sanctions would also have barred flights to and from Haiti by noncommercial aircraft.

The sanctions bar American military exports to India and exports to companies involved in nuclear weapons development.