e)
Select five of the large coals and arrange along the rear of the
fuelbed, using the ribs in the rear of the fuelbed as a guide for
placement. (See fig. 17 below)
Fig. 17
f) Select the four remaining large coals and position to fill the gaps at
each end of the third row of coals, as shown. Fig. 18
Fig. 18
21
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