The Movement for the Emancipation of the Niger Delta (MEND) says armed with assault rifles and heavy machine guns raided an oil facility jointly operated by Royal Dutch Shell and Chevron in Rivers state.
VOA: standard.2009.12.21
Of the Seven Sisters of Declining Exports, six are countries where the oilmachine is run by a national oil firm.
What's more, a machine-made surface produces the wrong kind of friction: to do its job precisely, the plate's surface needs minute scorings, of only a few microns each, where machineoil can reside.