If you watched
Ice Road Truckers tonight you were treated to watching an oil patch event called
"Two Trucking a Derrick."It looked nice, clean and easy up on the Arctic ice road but it takes a lot of skill, daring and patience to perform on Texas county roads. (You won't see it on highways because TxDOT makes truckers dismantle the mast and haul it in two or three loads, which requires a full day to disassemble and reassemble.) But if the move is within a field or can be done on county roads, two-trucking can save much time and money for the drilling company.
The photo below is a more typical picture of a two-truck derrick move ... the lead 30-ton tandem under the crown section. This truck has the easy job when making a tight turn.

This photo shows the truck carrying the bottom section of that 120 foot-or-so mast. He has been backing since leaving the old location and must maneuver his end of the load in such a way to be able to make the same turnoff as the lead truck. It is tricky business, particularly when negotiating a 90 degree bend with fence posts and power poles inconveniently located along the roadside.

I doubt if there are many truck pushers still around who can supervise this maneuver safely.
[This message has been edited by fossil_ag (edited 7/11/2008 9:46p).]