This is a revised version of this 5x9 plan: updated structures and some terrain; revised gentle "S" curves at the top, using O96 for the outside O48-minimum loop, and O84 for the inside O36-minimum loop-to-loop route. Operators used to O-36 curves will enjoy viewing their trains easing through these graceful curves.
I took Tom's suggestion and added a mine in the upper left corner.