▁brand . ▁The ▁stations ▁in ▁Norway ▁origin ated ▁as ▁Nor ol ▁stations , ▁while ▁the ▁stations ▁in ▁Den mark ▁and ▁Sweden ▁were ▁purchased ▁from ▁Es so ▁in ▁ 1 9 8 5 , ▁and ▁the ▁stations ▁in ▁Ireland ▁were ▁purchased ▁from ▁British ▁Pet role um ▁in ▁ 1 9 9 2 ▁and ▁Con oco Ph ili ps ▁Jet ▁in ▁the ▁mid ▁' 9 0 s , ▁then ▁sold ▁by ▁Stato il ▁to ▁Top az ▁O il ▁in ▁ 2 0 0 6 . ▁Stato il ▁also ▁built ▁up ▁a ▁network ▁of ▁stations ▁in ▁part ▁of ▁Eastern ▁Europe ▁in ▁the ▁ 1 9 9 0 s . ▁ ▁In ▁ 1 9 9 1 , ▁a ▁controvers y ▁arose ▁between ▁Stato il ▁and ▁local ▁environmental ists , ▁mainly ▁from ▁Natur ▁og ▁Ung dom ▁and ▁Fri ends ▁of ▁the ▁Earth ▁Norway , ▁who ▁protest ed ▁the ▁building ▁of ▁a ▁new ▁research ▁and ▁development ▁centre ▁at ▁Rot vol l , ▁in ▁Tr ond heim , ▁Norway , ▁a ▁wet lands ▁area ▁close ▁to ▁the ▁city ▁with ▁significant ▁bird ▁life . ▁The ▁controvers y ▁clim ax ed ▁with ▁civil ▁dis ob ed ience ▁by ▁the ▁environmental ists , ▁but ▁the ▁centre ▁was ▁still ▁built . ▁ ▁The ▁company ▁was ▁priv at ised ▁and ▁made ▁a ▁public ▁limited ▁company ▁( all men nak s jes elsk ap ) ▁in ▁ 2 0 0 1 , ▁becoming ▁listed ▁on ▁both ▁the ▁Os lo ▁Stock ▁Exchange ▁and ▁the ▁New ▁York ▁Stock ▁Exchange . ▁At ▁the ▁same ▁time , ▁it ▁changed