Final answer:
Smooth buckets on mini excavators and hydraulic excavators are primarily used for digging and excavation tasks. They have a flat edge and a smooth surface, making them ideal for cutting through various types of soil and moving large amounts of material.
Step-by-step explanation:
Smooth buckets on mini excavators and hydraulic excavators are primarily used for digging and excavation tasks. They have a flat edge and a smooth surface, making them ideal for cutting through various types of soil and moving large amounts of material. The smooth bucket design allows for efficient digging and minimal soil disturbance, making it suitable for tasks like trenching, foundation work, landscaping, and general earthmoving.