Petroleum industry in Nigeria to transport the crude oil. Also because of the lack of highly productive fields, money from the jointly operated (with the federal government) companies is constantly directed towards petroleum exploration and production. Nigeria's petroleum is classified mostly as "light" and "sweet", as the oil is largely free of sulphur. Nigeria is the largest producer of sweet oil in OPEC. This sweet oil is similar in composition to petroleum extracted from the North Sea. This crude oil is known as "Bonny light". Names of other Nigerian crudes, all of which are named according to export terminal, are Qua Ibo, Escravos blend,
Brass River River, had contributed towards building an iron church. It was opened on 9 October 1884 in presence of the congregation of 1,202 people. The congregation of St. Barnabas at Tawn, Brass River, had started to raise contributions for a similar iron church. At one time the town of Twon-Brass was the main port of the Nembe Kingdom, called by one historian "the Venice of the Niger Delta", and was dominant in the palm oil trade of the region. When the Royal Niger Company became an increasingly strong rival in the trade, the town's economy was severely damaged. In January 1895