The maximum oil yield obtained at 116.6 kpa for 12 min was similar for both particle size samples, that is, 48.44% and 48.40% for coarse and fine particle size samples respectively. There is no significant (p > 0.005) difference in the oil yield obtained at the different particle sizes, as was the case of conophor seed (Fashina and Ajibola, 1989). This shows that
particle size within the range of 0.5 – 1.0 mm and below will be suitable for mechanical expression of oil from almond seed. Figures 1 and 2 also show graphically that oil yield increased with increase in applied pressure and pressing time.