ノルスク・ハイドロ
The disagreement between Norsk Hydro and NSB continued through the 1930s- and 40s until an agreement was reached in 1952 as to the value of each party in the line. On 1 July 1953 NSB bought Norsk Hydro's ownership in the line; the company remained a limited company until April 1956. A new agreement for transport fees was reached, giving Norsk Hydro a quantity discount, but falling production at Rjukan made it impossible for Norsk Hydro to take advantage of the potential discount.