  We estimate the radiative energy-loss of heavy quarks, produced from the
initial fusion of partons, while propagating in a quark-gluon plasma which may
be formed in the wake of relativistic heavy ion collisions. We find that the
radiative energy-loss for heavy quarks is larger than the collisional
energy-loss for all energies. We point out the consequences on possible signals
of the quark-gluon plasma.
