The goals of the HIRE (High Resolution Reflection Seismics for Ore Exploration 2007-2010) project have been to (1) extend reflection surveys to exploration of the Precambrian crystalline bedrock of Finland, (2) apply 3D visualization and modelling techniques in data interpretation, and (3) improve the structural database on the most important mineral resource provinces in Finland. In compiling models of the HIRE targets we have used reflection seismic data, airborne and ground geophysics, geological maps and drilling data. Seismic reflection surveys have traditionally been applied in exploring for oil and gas deposits, but currently there is increasing interest in using the method in exploration for mineral deposits in crystalline bedrock areas. This can be attributed to the high resolution provided by the reflection method, which is much better than that of any other conventional geophysical method. In addition, the petrophysical parameters underlying rock reflectivity, i.e., the acoustic impedance, which is a product of rock density and seismic velocity, is closely associated with geological rock properties. Our list of targets comprises fifteen exploration and mining camps in a very diverse selection of geological environments containing Cu, Ni, Cr, PGE, Zn, and Au deposits, most of them economic, as well as the first Finnish site for nuclear waste disposal. The surveys were carried out in co-operation with 12 industrial partners. Fieldwork was completed in 2007-2008, and processing and interpretation in 2009-2010. The surveys comprised 2D lines measured using either Vibroseis sources or dynamite shots in shallow drill holes. Typically, a target area was covered with a network of connected lines with a total length of 10-90 line km, which provided a good database for 3D visualization and modelling. Our seismic contractor was Vniigeofizika, Moscow, Russia, and the company was responsible for the field acquisition and basic processing of the data. The Institute of Seismology, University of Helsinki, has been our research partner and subcontractor in the project and responsible for the more detailed post-stack processing of the results. Previously unknown structures were revealed in all HIRE targets, and our database on the structures of the investigated deposit areas has considerably expanded. Furthermore, previously unknown potential host rocks of deposits were discovered in several targets. The HIRE results have considerably increased the level of detailed knowledge at previously unexplored depths and it seems that the ore potential of the study areas may be higher than earlier anticipated. The results support the continued application of seismic reflection surveys in mineral exploration.