. ▁Ex terior ▁walls ▁are ▁of ▁dark - red ▁faced ▁brick , ▁with ▁Long me adow ▁brown stone ▁tr imm ings , ▁and ▁are ▁sur mount ed ▁by ▁a ▁hip ▁roof ▁supported ▁by ▁steel ▁tr uss es ▁and ▁covered ▁with ▁sl ate . ▁The ▁steps ▁at ▁the ▁main ▁entrance , ▁the ▁water - table ▁course ▁and ▁the ▁tr imm ings ▁below ▁the ▁water - table ▁are ▁of ▁p ink ▁Mil ford ▁gran ite . ▁ ▁The ▁building ▁is ▁sub div ided ▁by ▁a ▁division ▁wall ▁forming ▁an ▁engine ▁room ▁ ▁long ▁by ▁ ▁wide ▁and ▁ ▁high , ▁and ▁a ▁bo iler ▁room ▁ ▁long ▁by ▁ ▁wide ▁and ▁ ▁high . ▁The ▁interior ▁facing ▁of ▁the ▁engine ▁and ▁bo iler ▁room ▁walls ▁is ▁of ▁red ▁brick . ▁The ▁engine ▁room ▁floor ▁is ▁of ▁red ▁quar ry ▁tile . ▁The ▁flo ors ▁in ▁the ▁bas ement ▁of ▁the ▁engine ▁room ▁and ▁in ▁the ▁bo iler ▁and ▁coal ▁houses ▁are ▁gran ol ith ic . ▁In ▁the ▁rear ▁of ▁the ▁bo iler ▁room ▁there ▁is ▁an ▁under ground ▁coal ▁pocket ▁ ▁long ▁by ▁ ▁wide ▁by ▁ ▁high , ▁covered ▁by ▁a ▁rein for ced ▁concrete ▁roof ▁over ▁which ▁the ▁side ▁track ▁is ▁carried . ▁In ▁this ▁roof ▁there ▁are ▁ 1 6 ▁open ings ▁through ▁which ▁coal ▁may ▁be ▁un loaded ▁from ▁the ▁cars . ▁The ▁brick ▁chim ney ▁is ▁in ▁the ▁rear ▁of ▁the ▁building . ▁It ▁is ▁ ▁high ▁and ▁ ▁in ▁diameter ▁at ▁the ▁base , ▁dimin ishing ▁to ▁