Work on the rotation of the magnetic field around the shock propagation dir
ection in an oblique shock in a dusty medium is reviewed. A significant obs
ervational consequence is that the rotation lowers the minimum speed of a s
hock in which sputtering of grains is important. The effects of mass-loadin
g and magnetic fields on the strengths of termination shocks of winds are c
onsidered. Such effects may be of relevance to the production of radio-quie
t sources and are certainly important in the establishment of the ratio of
the intensities of softer and harder radiation emitted by thermal processes
in the winds.