Complex sentence: He was the owner of the only 100% Inuvialuit-owned transportation company, E. Gruben's Transport Ltd, that was passed down to him from his father Eddie Gruben and is still in business to this day.
Split into simpler sentences: He was the owner of the only Inuvialuit-owned transportation company; it was passed down to him from his father Eddie Gruben. This company is E. Gruben's Transport Ltd. and is still in business to this day.