Shares in industrial conglomerate 3M (MMM 4.69%) spiked by 6% in early morning trading as the market warmed to the company's fourth-quarter earnings report.3M's turnaround continuesThe earnings report and guidance were solid enough and helped confirm the bullish case for 3M stock. While its end markets remain mixed -- strength in areas like electronics, aerospace, and roofing granules is being offset by weakness in areas like the automotive aftermarket, personal safety, and home and auto care -- 3M's manage ...