27
27
e) Select pebbles E, F & G and fit onto the ribs of the fuel-bed base.
See fig. 25 below.
Fig. 25
E
F G
f) Select pebbles H, I, J & K and arrange along the rear of the
fuelbed, directly behind the third row of coals. See fig. 26 below.
Fig. 26
I J
H
K