Sport's ruling body, Fina, has ordered De Bruin to appear before its doping panel.

BBC: Irish swimmer denies drugs claims

But ultimately De Bruin thinks most of the revenue will come from charging for ancillary services, from insurance to shipping.

FORBES: Beneficent Billionaire?

"Companies often hold unnecessary inventories as a safety measure because they really don't have an idea about availability at the supplier's end, " explains Chris De Bruin, Metique's chief operating officer.

FORBES: Beneficent Billionaire?

The swimmer, who is married to her Dutch coach, Erik De Bruin, stunned the sports world by winning three gold medals and one bronze at the Atlanta Olympic Games in 1996.

BBC: Irish swimmer denies drugs claims