Dark matter investigation with DAMA set-ups

Experimental observations and theoretical arguments at Galaxy and larger scales suggested that a large fraction of the universe is composed by Dark Matter particles. This motivated the DAMA experimental eorts to investigate the presence of such particles in the galactic halo by exploiting a model-independent signature and very highly radiop- ure set-ups deep underground. Here, a review of the model-independent positive results, obtained by the DAMA set-ups at the Gran Sasso National Laboratory of the INFN, and some of the implications will be given.