You simply have to add your own lighting to bring out the details and have a proper exposure throughout the image, or you can wait until the right time of day using the sun as the main light source (which I did here). It's not easy to make things like this interesting but that is what I love about the challenges of Mine Photography.
I few months ago I had the opportunity to photograph some heavy equipment with Pioneer Construction at one of their open pits. By itself this truck looks like a Tonka Toy in a sandbox, but as soon as you put a person in the frame to show some scale, you can see just how enourmous this Caterpillar Off Highway Truck is.
It was a pleasure working with this company and their employees as they all showcased the upmost professionalism and courtesy.