Michael Kobs published a new report at June 22 about the alleged BUK missile smoke plume.
More details about the plume photo here.
Kobs states the speed of movement of the smoke plume does not match the wind speed at July 17.
He also states the black smoke cannot be a fire at the launch field. Other doubts are the fact that the plume remains visbible for 3 minutes.
Additionally, close to the alleged launch site a similar piece of land was on fire. Last but not least, Google Earth images in July 2014 show severall field burnt.