The collapse of oil prices in the last six months is threatening to end a recent industrial revival in manufacturing centers like this town of 64,000 on the banks of Lake Erie. The U.S. shale drilling boom lifted Midwest manufacturing economies, enriched property owners with mineral rights and even brought back the fat blue-collar paychecks that once were harder to find. But as drilling and exploration for new oil and gas slow with the drop in energy prices, cutbacks at heavy-industry companies are cropping up. The U.S. Steel Corp. plant here, which depends heavily on oil and gas companies to buy its steel pipe and tubes, warned on Monday it might have […]