  We consider an optically thick spherical agglomerate of magneto-optical
scatterers with a central isotropic, unpolarized light source, placed in a
homogeneous magnetic field. The Photon Hall Effect induces a rotating Poynting
vector, both inside and outside the medium. We show that electromagnetic
(orbital) angular momentum leaks out and induces a torque proportional to the
injection power of the source and the photon Hall angle. This effect represents
a novel class of optical phenomena, generating angular momentum from diffusive
magneto-transport.
