ELI5: Explain Like I'm 5

Bulk materials

Bulk materials are materials like dirt, rocks, or sand that are very large. They are usually shipped in large trucks or shipped in bulk by train to construction sites. Bulk materials are usually used to make roads, sidewalks, buildings, and other works of construction. When you have a lot of materials to ship, it’s easier and more economical to ship them in bulk. Bulk materials are also cheaper and easier to get than smaller materials because they don’t need to be processed or cut into smaller pieces.