Liquidcamphor,
In no way would I take yours (or anyone else postings on this thread for that matter) as derogatory. It's just a discussion, and so far a very good one with no "children" interfering and calling each other names.
I think Dutch hit the nail on the head with how this is going to work, and it's probably similar to the deal that happened a few years back when the C-3's were being modified by a contractor in Yard A. For those who don't know what I'm talking about, here's what happened...
Kawasaki was to perform warranty work on the C3s that were already delivered. The Kawasaki employees (and this is second hand information, anyone please correct me if I'm wrong) were non-union, and thus, were not allowed to perform the work at Richmond Hill or at Hillside. Instead, they leased space in Yard A from NYAR. They constructed a temporary facility, and originally, the coaches were delivered by LIRR to Fresh Pond, and NYAR brought them to Yard A.
After a few runs, the unions complained that this work should have been performed by LIRR crews (and rightfully so, BTW). So, the procedure was modified that LIRR crews would bring the trains to Yard A, where they were interchanged with NYAR. NYAR would then perform switching at Yard A (which they were paid for by Kawasaki) to place them on their shop track for repairs.
This may be what is going to happen with the rock. There may be LIRR work trains bringing loaded cars to a location to be interchanged with NYAR. NYAR would then haul the rock to wherever it is billed.
Jay