The Bengal Global Business Summit has attracted investment proposals worth at least Rs.2,50,104, crore ($37 billion), West Bengal Chief Minister Mamata Banerjee announced here on Saturday.Addressing industrialists on the concluding day of BGBS, Banerjee said the manufacturing sector has drawn proposals valued at Rs.1,60,958 crore.Banerjee said the proposals received covered a wide range of sectors like mining, textile, power, IT and telecom, urban development, housing, tourism, health transport and education."Very restrictively speaking, whatever we counted the investment proposals are not less than 2,50,104 crores," she said.