ABIDJAN, May 20 (Reuters) - From his lagoon-side allotment in Ivory Coast's economic capital Abidjan, Moussa Yanda has a ringside seat to watch the foundations of a $290-million toll bridge slowly rise up from the shore.

LONDON, May 18 (Reuters) - Angolan state oil firm Sonangol started offering July cargoes on Friday, raising differentials for some grades such as Girassol significantly higher than June levels. Angolan crude export volume was set to fall in July due mainly to reduced output of Girassol during field maintenance. Nigerian deals remained thin, with about 10-15 June loading cargoes unsold and ahead of the release of official selling prices, traders said. ANGOLA * Sonangol'

WASHINGTON, May 18 (Reuters) - Buffeted by the euro zone crisis and distracted by political problems at home, the leaders of the world's industrial powers turned to the private sector on Friday to help fight hunger and malnutrition for up to a billion people struggling with shortages, droughts and rising food prices.

ABUJA, May 18 (Reuters) - Nigeria earned 626.18 billion naira ($3.95 billion) in oil revenues in April, down 13.8 percent from 726.77 billion naira in March due to lower production, the accountant general said on Friday.

LAGOS, May 18 (Reuters) - French oil major Total has plugged a gas leak in southern Nigeria's Niger Delta region and no longer needs to drill an additional relief well to curb its flow, a spokesman said on Friday.

LONDON, May 18 (Reuters) - Kenyan Treasury bill yields are likely to fall to single digits for the first time since September at an auction next week, while healthy demand is expected at Zambia's first bond auction in two months on Thursday.

LAGOS, May 18 (Reuters) - Nigeria's interbank lending rates rose this week to an average of 14.66 percent, from 14.16 percent last week, as cash outflows to bonds and dollar purchases drained liquidity in the market further, traders said on Friday.

WASHINGTON, May 18 (Reuters) - Buffeted by the euro zone crisis and distracted by political problems at home, the leaders of the world's industrial powers are turning to the private sector to help fight hunger and malnutrition for up to a billion people beset by shortages, droughts and rising food prices.

NAIROBI, May 18 (Reuters) - The following company announcements, scheduled economic indicators, debt and currency market moves and political events may affect African markets on Friday. - - - - - EVENTS: MAURITIUS-Bank of Mauritius to offer 400 million rupees of 364-day Treasury bills at auction. GLOBAL MARKETS Asian shares tumbled on Friday and were set for their worst weekly showing since September, amid signs of growing instability among Spanish banks and political turmoil in G

* North Korea skirted ban on luxury goods, arms sales-report (Adds details on Myanmar)