Inquiring minds want to know :)
I've also read the informative Platt's Oilgram (Volume 79 Number 15, January 23, 2001) where it is reported: In 1973, with oil trading profits soaring after the first Arab embargo, Rich left Phibro to form his own firm, Marc Rich & Co, which soon became a major player in world oil markets. He was particularly adept at securing supplies of Nigerian and Iraqi crudes, and gained a reputation as a reliable supplier in tough times to crude-short oil majors."
Read the full article (Iooks like it was written in 2002) at: Investigating Marc Rich and his deals with Nigeria's Oil
Through an elaborate network of carrots and sticks and a willing army of Nigeria's soldiers and some civilians, controversial global dealer and billionaire Marc Rich, literally and practically, made deals and steals; yes, laughed his way to the banks from crude oil contracts, unpaid millions in oil royalties and false declarations of quantities of crude lifted and exported from Nigeria for almost 25 years. Worse, he lifted Nigeria's oil and shipped same to then embargoed apartheid regime in South Africa.
There are additional articles below the one cited above, one called "Marc Rich's Path to Fortune" and another entitled "Who's Marc Rich?" All very interesting.