Construction-Sand & Gravel" is an industry that involves the extraction, processing, and sale of sand, gravel, and crushed stone. This industry is essential for the construction of buildings, roads, bridges, and other infrastructure projects. The process of extracting sand and gravel involves the use of heavy equipment and machinery, such as bulldozers, front-end loaders, and conveyor belts. Once the materials are extracted, they are transported to processing plants where they are crushed, screened, and washed to remove impurities. The final products are then sold to construction companies, contractors, and other customers for use in various construction projects.