It was the BHP Colliery Competition in the 90's. West Cliff coal mine, not owned by BHP, but I used two photos, did the trigonometry to make a plan, and then made the model. I forget the scale, it was probably 1:1000 to 1:2000 scale.
Hi, I am a keen modeller in Australia. I loved technical drawing in high school (back in the day when it was a thing) and I won a competition in with a paper and polystyrene model of a mine that took me on a trip to mines and a lovely tropical island. I love playing, painting, modding models...