There are other coal locations just off line such as Power Park in Jacksonville from the Kingsland Sub just outside of Jacksonville Yard to the north...
Consider 2 Mojave Subs for the most part. The BNSF (MOJ) & The UPRR (MJ).
BNSF East-West (Hinkley thru to Sanborn) while UPRR North-South (Kern Jct....
Depends on type, Hazmat, non-Hazmat, also eng(s) occupied, not-occupied etc.. Lots of factors come into play, also, further rules of a particular RR....