Excavator boom - video

Excavator boom. By M. Bjoernstroem. 1:44:40 video:

https://www.youtube.com/watch?v=6U63bG52Er0

Part 2. By M. Bjoernstroem. 1:41:34 video:

https://www.youtube.com/watch?v=1lTaFjPBAag