  The ballistic deposition on a one dimensional substrate of grains with one
degree of freedom, called spin, is studied with respect to relaxation processes
during deposition. The "spin" represents the grain anisotropy, e.g. its longest
axis with respect to the vertical. The grains interact through some contact
energy (J) and are allowed to flip with a probability q during deposition and
relaxation. Different relaxation processes are investigated. The pile structure
is investigated, i.e. the density and "magnetisation", as a function of q and
J. A percolation transition is found across which the cluster size changes from
exponential-like to a power law-like dependence. The differences between
"ferromagnetic" and "anti-ferromagnetic"-like contact energies are emphasized
as a function of q.
