Section 8548 offset Section now offsets to west through a valley of two coals. This valley has two 1" coals running almost parallel to slope on the west side of the valley. It appears as though the lower of the two coals overlies the vertebrate sand. Offset starts at the base of the first coal. Unit no thickness Cum. Thickness Description 14 1.4 m 130.5/1s coal of coal pair 15 1.4 m 131.9 sandy split 12 coals which see thicken to the west to a large cross-bedded channel 10m thick Fe-stone w/ Acer Ceroid Mehusgar.