Orica has increased its shareholder payout after the explosives maker swung to a $245.1 million full-year profit despite $134 million in writedowns against IT and a WA ammonium nitrate plant.

Orica has increased its shareholder payout after the explosives maker swung to a $245.1 million full-year profit despite $134 million in writedowns against IT and a WA ammonium nitrate plant.