Great film. I wanted to get a sense of the economics of the entire thing. They said mining for sand could be more profitable than mining for gold. I presume

Great film. I wanted to get a sense of the economics of the entire thing. They said mining for sand could be more profitable than mining for gold. I presume that means extracting a truckload of sand will yield more profit than a truck of ore containing rock? I’m also now curious about sand alternatives.