NEW ORLEANS (AP) - The Gulf of Mexico's offshore petroleum industry is far from recovering from hurricanes Katrina and Rita, and at least one-sixth of the region's normal daily oil production will still be off line at the start of next storm season, a federal agency says. Katrina and Rita destroyed 115 of the Gulf's 4,000 production platforms and damaged another 52, according to a report released Thursday by the Minerals Management Service, which manages federal offshore leases. The storms' combined fury - much stronger when they swept across the Gulf than when they hit shore - also damaged 183...