 In 1980 , the line had NOK 2 @.@ 1 million in income , of which NOK 1 @.@ 6 million was from freight ( representing all revenue from freight that ran on the Hardanger Line ) . Operating expenses were NOK 4 @.@ 8 million , and the deficit was covered by the national government . The line employed 21 people . In 1980 , the estimated cost of upgrading the line to 18 tonnes ( 18 long tons ; 20 short tons ) axle load was NOK 9 @.@ 6 million . Freight volume was then estimated to increase between 100 and 300 percent , and an upgrade was calculated to give a positive net present value , although it would not be sufficient to cover the full existing deficit . The plans included introduction of a refrigerated depot at Granvin . At the same time , it was estimated that the cost of retaining a 12 @-@ tonne ( 12 @-@ long @-@ ton ; 13 @-@ short @-@ ton ) axle load would require investments of NOK 6 million . 
