"The dredge was incredibly loud. Tons of rocks were scooped from the ground and dumped inside. The conveyor belts were rimmed with thick planks of wood that kept everything from falling out. It was like a long water slide — you've seen those? — but instead of water shooting through, it was boulders. It echoed like mad, which seemed to quadruple the rumbling. Such a horrible sound. A crew of four was required to run the dredge, and they were separated by quite a distance. One was stationed at the gears in front where they watched everything come in. That person greased the machines and pulled the stop-chain if things got jammed up. Another was at the far end, watching the tailings dump out. There was a man at the control booth and one more we called a roamer — a guy who fixed things on the fly from a running list of problems."
Webnovel 
This is a very important paragraph
"The dredge was incredibly loud. Tons of rocks were scooped from the ground and dumped inside. The conveyor belts were rimmed with thick planks of wood that kept everything from falling out. It was like a long water slide — you've seen those? — but instead of water shooting through, it was boulders. It echoed like mad, which seemed to quadruple the rumbling. Such a horrible sound. A crew of four was required to run the dredge, and they were separated by quite a distance. One was stationed at the gears in front where they watched everything come in. That person greased the machines and pulled the stop-chain if things got jammed up. Another was at the far end, watching the tailings dump out. There was a man at the control booth and one more we called a roamer — a guy who fixed things on the fly from a running list of problems."
Skeleton Creek
Horror · Unknown_Level