Abstract
Strongly interacting gauge mediation (SIGM) of supersymmetry breaking is
very attractive, since it naturally predicts a light gravitino of mass ≲ (10) eV,
which causes no cosmological problem.
We discuss various signatures of the SIGM in the early stage
(a low integrated luminosity period) of the LHC experiments.
We show, in particular, a possible way
to discriminate it from the conventional gauge mediation
by counting the number of high PT leptons.