July 16, 2006: Nigeria

Explosions hit Niger [sic] oil installations -- Nigeria By William Nsoyoh, July 13, 06
cnews.canoe.ca/CNEWS/World/2006/07/13/1682495-ap.html

One of the blasts blew apart an 18-inch oil pipeline at the Clough Creek Tepidapa flow station, and heavy spillage was reported ...

[...] hit a 10-inch riverside pipeline the same day in Lagoagbene.

[....] Militant assaults on oil installations this year in the main oil-producing Niger Delta have cut more than 20 per cent of Nigeria's daily oil exports of 2.5 million barrels and helped drive up world oil prices.

Who are responsible?