. ▁With ▁the ▁union ▁of ▁the ▁two ▁Grand ▁L od ges ▁on ▁ 2 9 ▁April ▁ 1 9 2 1 ▁Yang an ▁became ▁no . ▁ 1 4 8 ▁on ▁the ▁roll ▁of ▁the ▁United ▁Grand ▁L odge ▁of ▁Queensland . ▁ ▁After ▁the ▁first ▁World ▁War , ▁the ▁L odge ▁began ▁to ▁expand ▁again ; ▁one ▁of ▁the ▁events ▁of ▁the ▁district ▁was ▁the ▁annual ▁Yang an ▁Mason ic ▁Ball . ▁A ▁number ▁of ▁improvements ▁were ▁made ▁to ▁the ▁L odge ▁Room ▁at ▁this ▁time ▁including ▁the ▁purchase ▁of ▁the ▁alt ar , ▁organ , ▁trac ing ▁bo ards , ▁and ▁various ▁other ▁furn ish ings . ▁B atter y ▁power ed ▁electric ▁light ▁was ▁installed ▁c . 1 9 3 0 ▁to ▁replace ▁k eros ene ▁lan tern s ▁and ▁cand les . ▁ ▁During ▁World ▁War ▁II ▁the ▁activities ▁of ▁the ▁l odge ▁were ▁sever ely ▁cur ta iled : ▁black out ▁conditions ▁were ▁enfor ced , ▁installation ▁ban qu ets ▁and ▁formal ▁dress ▁for ▁meet ings ▁were ▁abandoned , ▁and ▁nearly ▁all ▁Off ices ▁were ▁held ▁by ▁Past ▁Masters . ▁ ▁Post - war ▁alter ations ▁included ▁modifications ▁to ▁enable ▁the ▁removal ▁of ▁part ▁of ▁the ▁wall ▁between ▁the ▁L odge ▁Room ▁and ▁ante - room ▁( 1 9 5 0 s ); ▁and ▁during ▁the ▁ 1 9 7 0 s ▁work ▁included ▁the ▁rem od elling ▁of ▁the ▁Fest ive ▁Board ▁Room , ▁alter ations ▁to ▁provide ▁a ▁second ▁external ▁st air way , ▁and ▁the