▁remains ▁of ▁the ▁bas il ica ▁were ▁bare ly ▁visible , ▁but ▁still ▁bear ▁witness ▁to ▁the ▁settlement ▁developed ▁in ▁the ▁late ▁Roman ▁period . ▁ ▁References ▁ ▁Category : Pop ulated ▁places ▁in ▁Don ji ▁V ak uf <0x0A> </s> ▁The ▁H ald ia ▁Re fin ery ▁for ▁processing ▁ 2 . 5 ▁million ▁t onnes ▁per ▁year ▁of ▁Middle ▁East ▁cru de ▁was ▁commission ed ▁in ▁January , ▁ 1 9 7 5 ▁with ▁two ▁se ctors ▁- ▁one ▁for ▁producing ▁fuel ▁products ▁and ▁the ▁other ▁for ▁L ube ▁base ▁stock s . ▁ ▁The ▁ref in ery ▁is ▁in ▁H ald ia ▁near ▁Kol k ata ▁( West ▁Beng al ). ▁The ▁fuel ▁sector ▁was ▁built ▁with ▁French ▁collaboration ▁and ▁the ▁L ube ▁sector ▁with ▁Roman ian ▁collaboration . ▁The ▁ref ining ▁capacity ▁of ▁the ▁Re fin ery ▁was ▁increased ▁to ▁ 2 . 7 5 ▁million ▁t onnes ▁per ▁year ▁in ▁ 1 9 8 9 ▁through ▁deb ott l ene ck ing ▁measures . ▁▁ ▁The ▁ref ining ▁capacity ▁was ▁further ▁expanded ▁to ▁ 3 . 7 5 ▁million ▁t onnes ▁per ▁year ▁with ▁the ▁commission ing ▁of ▁new ▁cru de ▁dist ill ation ▁unit ▁of ▁ 1 . 0 ▁million ▁t onnes ▁per ▁year ▁in ▁March , ▁ 1 9 9 7 . ▁The ▁present ▁ref ining ▁capacity ▁of ▁this ▁Re fin ery ▁is ▁ 7 . 5 0 ▁million ▁t onnes ▁per ▁year . ▁ ▁The ▁executive ▁director ▁of ▁ref in ery ▁is ▁Mr . ▁B