The activities of international oil firms operating in the oil sector and milking the economy came to the fore as the Tax Appeal Tribunal, Lagos Zone, on Friday ordered Mobil Producing Nigeria Unlimited to pay $83.4 million (N13 billion) education tax to the Federal Inland Revenue Service (FIRS), the News Agency of Nigeria ( NAN) reported.

Mobil Producing Nigeria Unlimited, an ExxonMobil subsidiary operates an oil export terminal off Akwa Ibom coastline connected by a pipeline network to its two oil blocks in a Joint Venture with NNPC.