Kryolitselskabet Øresund A/S Company (KØ) explored the Greenland Norite Belt from 1959 to 1973. KØ systematically prospected the area from the air; gossanous outcrops were investigated by prospecting, blasting, trenching, sampling, geological mapping, ground geophysics and/or shallow diamond drilling. This resulted in the discovery of many of the currently-known nickel-copper sulphide occurrences and the recognition of a 15 x 75 km belt of nickel-copper-bearing norite intrusions referred to as the Greenland Norite Belt (figure 2). Important success was achieved from drilling at Imiak Hill with a 9.85 m intersection grading 2.67% Ni and 0.60% Cu.
An extensive fixed wing GeoTEM survey covering the GNB was commissioned by the Geological Survey of Greenland and Denmark (GEUS) in 1995 and flown by Geoterrex Limited. Between 1995 and 2000, the survey was followed up by Cominco and Falconbridge, neither of which conducted any diamond drilling. Both companies re-sampled historical drill core and confirmed many of the historical high-grade intersections as well as the systematically high nickel tenor  of the sulphide mineralization throughout the GNB.