Hi, I just joined and this is my first post. My husband's parents own a waste disposal company and we have just learned of the profits to be made from scrap metal. He wants to cut up and scrap a 15 ton garbage truck that is only gathering rust. Does anyone have any advice? We also have some old pool equipment (like this cast iron tank that 2 strong men w/a dolly could barely move). How small do we need to cut down this stuff? Thanks for any and all advice!