Statement 1 is correct: Isampur in Gulbarga (now Kalaburagi) district of Karnataka is a well-known Lower Palaeolithic site where extensive evidence of stone tool manufacturing has been found, particularly Acheulean tools. It is located near the Hunsgi valley, along the Kamta Halla stream. Statement 2 is correct: In archaeology, a blade is defined as a flake tool whose length is equal to or exceeds twice its width. This definition applies to Paleolithic blades, which are often associated with the Middle and especially Upper Paleolithic periods.