▁pre em in ence ▁in ▁oil ▁ref ining , ▁and ▁privile ging ▁Philadelphia ▁at ▁their ▁exp ense . ▁Indeed , ▁at ▁this ▁time ▁it ▁cost ▁ 2 0 % ▁more ▁to ▁ship ▁fre ight ▁to ▁San ▁Francisco ▁from ▁Pitts burgh , ▁than ▁from ▁New ▁York , ▁and ▁fre ight ▁rates ▁from ▁Pitts burgh ▁to ▁Philadelphia ▁were ▁identical ▁to ▁that ▁for ▁the ▁ ▁route ▁from ▁O il ▁City ▁to ▁Philadelphia . ▁ ▁On ▁June ▁ 1 , ▁ 1 8 7 7 , ▁the ▁Pennsylvania ▁Rail road ▁announced ▁a ▁w age ▁reduction ▁of ▁ 1 0 % ▁for ▁all ▁employees ▁and ▁officers ▁making ▁more ▁than ▁a ▁doll ar ▁a ▁day , ▁and ▁including ▁a ▁number ▁of ▁other ▁rail ro ads ▁controlled ▁by ▁the ▁company . ▁This ▁caused ▁a ▁small ▁un success ful ▁strike ▁north ▁of ▁Pitts burgh ▁in ▁Al leg hen y , ▁but ▁was ▁otherwise ▁accepted ▁without ▁disturb ance . ▁ ▁The ▁company ▁announced ▁that ▁on ▁July ▁ 1 9 , ▁it ▁would ▁implement ▁the ▁practice ▁of ▁double ▁heading ▁( jo ining ▁two ▁trains ' ▁worth ▁of ▁cars ▁into ▁one ▁train ▁with ▁two ▁engines ) ▁for ▁all ▁trains ▁moving ▁through ▁Pitts burgh . ▁This ▁would ▁reduce ▁the ▁number ▁of ▁jobs ▁that ▁were ▁available , ▁require ▁more ▁work , ▁and ▁increase ▁the ▁lik elihood ▁of ▁acc idents . ▁ ▁The ▁same ▁day ▁double ▁heading ▁was ▁to ▁go ▁into ▁effect , ▁the ▁super int endent ▁of ▁the ▁Pennsylvania ▁Rail road ▁at ▁Pitts burgh ▁issued ▁an ▁order ▁that , ▁according ▁to ▁strik ers , ▁effectively ▁double