6.9.4 Select two of the small coals and position at each end of the front row
of coals as indicated in figure 18 below.
Fig. 18
6.9.5 Select five of the large coals and arrange along the rear of the
fuelbed, using the end and three central ribs in the fuelbed
as a guide for placement. (See figure 19 below)
Fig. 19
73
2
off small coals
5 off large coals