Acting on a tip-off, a police team was sent to the area and during combing operation near Guntala Thanda (hamlet), the dump consisting of seven hand-grenades, 150 electrical detonators, as many as 200 non-electrical detonators, books containing Maoist literature and audio cassettes were recovered, a police official said.
"The dump is around two-year-old," the official said, adding further investigations were on.