Mushimba was sentenced to death but released on appeal in 1977 after it was found that the defense had leaked documents to the prosecution in his original trial.
His political track record and the fact that he was Nujoma's brother-in-law did not prevent him being detained by SWAPO in the late 1980s.
With independence, Mushimba played a dominant role in a number of business initiatives ranging from fishing through banking to construction.
The hotel's construction fell so far behind schedule that its launch event, the Miss Universe pageant of 1995, had to be held with the complex only part-completed.
He has also emerged as a key player in Epia Investments, the empowerment company formed by Ohlthaver and List, the owners of Namibia Breweries.