New York Times: Exxon Mobil and Chevron reported plunging revenue and profits on Friday, but their fortunes would have been even worse had it not been for a boom in their refining and chemical businesses. Still, those gains were not enough to stanch further job losses at Chevron, which said it planned to cut up to 10 percent of its work force. Exxon Mobil, the largest American oil company, reported a profit for the third quarter of $4.2 billion compared with $8.1 billion a year earlier. The plunge came with a 37...