What are the two types of conveyor stockpiles mentioned?

The two types of conveyor stockpiles that are commonly discussed are the cone and the elongated cone types. Cone stockpiles typically involve a shape that resembles a standard cone, where material is heaped into a mound, allowing for gravity to shape it. This type of stockpile can efficiently handle bulk materials, ensuring that the stockpile remains compact and stable.

Elongated cone stockpiles, on the other hand, maintain a similar cone shape but are stretched out along one axis. This design can aid in stockpiling materials in a more controlled manner, reducing the risk of segregation and facilitating better access for loading materials onto trucks or other forms of transportation. These configurations help to optimize space and enhance the efficiency of material handling operations.

While the other options mention terms like fixed, adjustable, and radial, they do not directly describe the physical shapes of stockpiles created by conveyor systems, which is why they are not the correct choice in this context. Understanding the characteristics of these stockpile shapes is essential for technicians working with aggregate materials in construction and paving processes.