(c)"technician" means a person having specialised knowledge and experience in-(i)constructional or manufacturing operations or mining or the generation or distribution of electricity or any other form of power; or(ii)agriculture, animal husbandry, dairy farming, deep sea fishing or ship building; or(iii)public administration or industrial or business management; or(iv)accountancy; or(v)any field of natural or applied science (including medical science) or social science; or(vi)any other field which the Board may prescribe in this behalf, who is employed in a capacity in which such specialised knowledge and experience are actually utilised;]