India on Friday described as "constructive and useful" the two-day meeting of the Nuclear Suppliers Group in the run-up to securing a clean exemption for conducting international nuclear commerce.

''We met a lot of individual delegates of NSC member-countries and had an opportunity to brief them on Thursday. We have been informed that the two-day meeting of NSG was constructive and useful", Foreign Secretary Shiv Shankar Menon told Indian journalists.

He said the exemption to NSG guidelines for nuclear trade would help civil nuclear cooperation and "is a necessary step for cooperation between India and the 45-nation grouping".

"We look forward to working with them (NSG)", Menon said.