In 1972 he set up Amana Consulting Engineers. Over a 15-year period the firm was responsible for the design and implementation of projects valued at about $2bn. The engineering services division held services for AW Chesterton of
Boston, and
Hewlett-Packard (1982). In 1981 a joint venture was set up with Earth Technology Corporation of California for geotechnical and geophysical surveying and mapping. Another venture involving Israeli interests covered architectural planning. At its peak, the company employed 30 engineers, including 10 expatriates. From 1980, the group began to develop rubber farms and has recently established a rubber processing venture. The group is also involved in insurance brokerage and trading in supply for the
oil industry. Investments have been made in banking, publishing and property. Edet Amana was a founding director of
Citibank Nigeria and served on the board of that bank from 1985 to 2010. fellow
Nigerian Institute of Management and fellow
International Institute of Directors. He is also a member of the
American Society of Civil Engineers and the Association of African Development Experts. ==Personal life==