This is the post he made with the picture. The guy who posted it is a mechanic at the shops. The rig is part of the Plant Ops
"Took this photo of the new cable scrapper yesterday. This one is for all the Mack fans out there. Everyone is always asking me about Mack firetrucks. Although it isn?t a firetruck, it?s still a Mack. ? According to what I have been told, this rig is used to pull cables out of the ground and chop it up to tiny little pieces. If anyone knows any more info it would be great to hear. Happy Saturday everyone! ?"