▁H ok end au qua . ▁However , ▁it ▁purchased ▁the ▁Ke yst one ▁F urn ace ▁from ▁D . ▁R unk le ▁Company ▁in ▁early ▁ 1 8 8 2 ▁and ▁the ▁Sau con ▁Iron ▁Company ▁in ▁Hell ert own , ▁Pennsylvania ▁on ▁December ▁ 1 3 , ▁ 1 8 8 4 , ▁ren aming ▁its ▁two ▁furn aces ▁No . ▁ 1 0 ▁and ▁No . ▁ 1 1 . ▁It ▁le ased ▁the ▁Lucy ▁F urn ace ▁from ▁ 1 8 8 6 ▁to ▁ 1 8 8 7 . ▁ ▁In ▁ 1 8 8 1 , ▁a ▁c inder ▁not ch ▁was ▁added ▁to ▁No . ▁ 8 ▁furn ace ▁at ▁Lock ▁R idge , ▁an ▁innov ation ▁which ▁allowed ▁removal ▁of ▁sl ag ▁from ▁the ▁furn ace ▁during ▁the ▁bl ast . ▁The ▁operators ▁initially ▁strugg led ▁with ▁fine - d irt ▁problems ▁after ▁the ▁change , ▁and ▁it ▁was ▁only ▁elimin ated ▁when ▁the ▁furn ace ▁bur nt ▁out ▁part ▁of ▁the ▁l ining . ▁The ▁furn ace ▁was ▁re - lined ▁to ▁the ▁new ▁geometry ▁and ▁found ▁to ▁be ▁much ▁more ▁efficient , ▁and ▁No . ▁ 7 ▁and ▁No . ▁ 2 ▁furn aces ▁were ▁rem ode led ▁in ▁the ▁same ▁fashion ▁at ▁the ▁end ▁of ▁ 1 8 8 1 . ▁The ▁other ▁furn aces ▁of ▁the ▁company ▁were ▁rem ode led ▁as ▁they ▁came ▁out ▁of ▁bl ast . ▁In ▁ 1 8 8 2 , ▁Thomas ▁Iron ▁took ▁over ▁the