3M, Boeing share losses lead Dow's nearly 200-point drop

Behind negative returns for shares of 3M and Boeing, the Dow Jones Industrial Average is falling Tuesday afternoon. The Dow was most recently trading 190 points lower (-0.4%), as shares of 3M and Boeing are contributing to the index’s intraday decline. 3M’s shares have fallen $3.52, or 2.7%, while those of Boeing have dropped $3.32, or 2.2…