  We return to further examination of the need for the existence of magnetic
monopoles based on the decades old derivation [Sherman Frankel, Amer. Jour. of
Physics, 44, 7, 683-6 1976], of both the monopole-charge force, vec(F) =
eg(vec(r) * vec(v)/c)/r^3, as well as the Dirac angular momentum, vec(l_f) = eg
hat(r), from P and T conservation alone, without any recourse whatsoever to
Maxwell's Equations. The eg product also appeared in the charge conserving
equation, deg/dt = 0 = edg/dt + gde/dt, and this paper examines the second
possible solution, dg/dt = - de/dt, namely monopole decay, accounting for the
non-observance of stable monopoles. It treats astrophysics and neutrino physics
consequences and suggestions for experimental searches.
