Jan 23 (Reuters) - Australia's Ampol Ltd ALD.AX reported a 56% drop in fourth-quarter margins at its Lytton refinery in Queensland on Thursday, hurt by operational constraints.
The country's top fuel retailer said refinery margin was $4.60 per barrel for the three months to Dec. 31, compared with last year's $10.52 per barrel.
(Reporting by John Biju in Bengaluru; Editing by Sriraj Kalluvila)
((John.Biju@thomsonreuters.com;))