Earlier this year we fabricated a 65' long portable work building that was complete with a 300 BBL Tank, 36" Gas Buster, Shale Shaker, Generator Room, & Tool Room.  This is a custom designed unit that is one part of a "new" mobile rig system.  The combined operations of all components apart of the mobile rig system complete the same production of larger stationary rigs at a much lower cost.  This building was shipped to the North Slope, where it is now in use.