 By the late 1980s , the company had sold all its hotel operations . The merged company retained the obligation to operate dining services on the trains , which throughout the 1980s necessitated considerable subsidies from NSB . In 1988 , NSB decided to organize the operation of the dining services through tendered contracts ; the first contract ( from 1990 through 1995 ) was won by TogService , a Narvesen subsidiary . The owners had an agreement that neither could sell without the approval of the other . In 1995 NSB sold its shares with Fritt Ord 's approval , and the company was listed on the Oslo Stock Exchange . 
 By the late 1980s , the company <a href='been_done' title='1'><mark>had</mark></a> sold all its hotel operations . The merged company retained the obligation to operate dining services on the trains , which throughout the 1980s necessitated considerable subsidies from NSB . In 1988 , NSB decided to organize the operation of the dining services through tendered contracts ; the first contract ( from 1990 through 1995 ) was won by TogService , a Narvesen subsidiary . The owners had an agreement <a href='null_relcl' title='2'><mark>that</mark></a>neither could sell without the approval of the other . In 1995 NSB sold its shares with Fritt Ord <a href='null_genetive' title='3'><mark>'s</mark></a>approval , and the company was listed on the Oslo Stock Exchange . 
By da late 1980s , tdacompany done sold alll its hotel operations . The merged company retained thdabligation to operate dining services on thedaains , which throughout the da0s necessitated considerable subsidies from NSB . In 1988 , NSB decided to organize the operation of the dining services through tendered contracts ; the first contract ( from 1990 through 1995 ) was won by TogService , a Narvesen subsidiary . The odars had an agreement neither could sell w/o the approval of the other . In 1995 NSB sold its shares wid Fritt Ord  approval , and the company was listed on the OsdaStock Exchange .