A bulldozer working to lift and fill sand and gravel during the day, the concept of engineering, construction and development, engineering professions and jobs in Saudi Arabia, sand assembly plant and huge machines, the strength and technology of the process of extracting building materials, heavy machinery and equipment
![A bulldozer working to lift and fill sand and gravel during the day, the concept of engineering, construction and development, engineering professions and jobs in Saudi Arabia, sand assembly plant and huge machines, the strength and technology of the process of extracting building materials, heavy machinery and equipment](https://cdn.arabsstock.com/uploads/images/126745/image-126745-bulldozer-working-lift-fill-sand-gravel-during-day-concep-thumbnail.webp)