BATON ROUGE, La. (AP) - State health officials are reopening some of the oyster beds closed as a precaution before Hurricane Isaac struck Louisiana. The Louisiana Department of Health and Hospitals says oyster harvesting areas 19, 21 and 23, which are located in coastal areas of Terrebonne Parish, will reopen half an hour before sunrise on Saturday. Oyster harvesting areas 1-28 were closed on Aug. 28. Last week, the state reopened areas 26, 27 and 28, which are located along the coastal areas of Vermillion and St. Mary parishes. Harvest areas 1-18, 20, 22, 24 and 25 will remain closed until health officials determine the waters are clear.