"What do you mean?"
They were still standing at the same spot and still not moving an inch. It was two in the afternoon, and the sun shined so brightly. Fortunately, they were standing in a shade, so the blazing sun didn't burn their skins.
Blue turned to Jack and answered, "Normally, a company will transport the fragmented overburden material to the nearest valley. They transport it to the nearest place, so they can easily move it to fill the pit again when they're done with the mining activity. But, when we were still above the ground, I didn't see any valley near here, so I thought they must have transported the material to somewhere rather far from here."
Jack fell silent. Once again, Blue proved that she was not an ordinary girl. She could analyze the case quickly and even meticulously examined her surroundings when they were still above the ground.