Sci-Fi Mining Model (no scale) best

Sci-fi underground mining facility. Not built to any scale. Add walkways, steps, ladders, etc. best to show the scale or put all the pieces in the background. Two pieces are included: the large gas mining surface machinery ( 9 3/4" x 4 3/4") and the cooling pump building (3" x 4"). Model work is a bit rough and not perfect. Items are made of styrene and wood.