679560.fig.0014a
(a)
679560.fig.0014b
(b)
679560.fig.0014c
(c)
Figure 14: Light microscope pictures of 5.6% MgO 1300 particles both fresh and used after 50 cycles. (a) fresh particles; (b) particles on which 50 cycles of 2 s reduction was performed; (c) particles on which 50 cycles of 14 s reduction was performed.