FACTBOX-African resource nationalism

June 19 (Reuters) - African countries are increasingly striking harder bargains with foreign companies which want to develop natural resources projects there.

Governments are following the global trend known as "resource nationalism" by imposing windfall taxes and reviewing previously-signed contracts. The following is a list of such measures taken by African oil, gas and metals-producing nations.

ALGERIA

Last year the oil and gas producer enacted a law, retroactive to August 1 2006, giving state-owned company Sonatrach a more central role and introducing a windfall tax on international oil companies.

It said it hoped the "exceptional profits" tax would bring in as much has $1 billion in 2007.

CHAD

In March, the World Bank told a consortium led by Exxon-Mobil (XOM.N) to properly compensate farmers in southern Chad for land the U.S. company acquired as it expands its search for oil in the Doba basin.

The bank's private-sector lender, the International Finance Corp., told Exxon to reassess its compensation plans after a independent report found the expansion of wells is affecting the livelihoods of families who live off the land.

Exxon operates the Chad-Cameroon oil pipeline development project, which includes Chevron (CVX.N) and Malaysia's state-run Petronas.

Last year, Chad's president Idriss Deby said the country must have a 60 percent stake in its oil output after receiving only "crumbs" from a foreign consortium running the industry.

DEMOCRATIC REPUBLIC OF CONGO

On June 11, Democratic Republic of Congo's government launched a review of around 60 mining contracts, aimed at ensuring the deals are legal and fair.

Most of Congo's mining contracts were agreed during a 1998-2003 war or under a three-year transitional government, which included the various factions from the six-year conflict.