Coal pile volume measurement issue

 How do account for an object over the coal pile like this? I have a chance to do a demo soon and it will have something like this over the coal pile. Will it effect the volume measurement?

 

You will be able to edit the point cloud and delete the points that are for the conveyor.  I use the 3d view and pan around to side view where the conveyor only has sky as background. Then I select the points and delete them.  I only need to remove the points that are over the pile.

Get yourself Global mapper, it does classification very well.