Most often concessions are granted for a period of ten to twenty years.  We have not been told yet about the concession(s) HIMR will announce on Friday, but I would assume this would be covered.  The good news, for Hollund and investors, is that the TigerLynk can harvest much faster than any other method.  So if anything, Hollund will finish each concession faster and make much more money.  And that is a good thing IMO.