Which tool is used for breaking hard surfaces during excavation?

Explanation:

1. A pickaxe is specifically designed for breaking hard surfaces during excavation.
2. It has a pointed end that allows workers to break through tough materials such as rock, concrete, or compacted soil.
3. It is commonly used in construction and mining for digging and breaking up hard surfaces.

 Additional Information

Crowbar: A crowbar is a tool used for levering, prying, and pulling objects apart. It is not designed specifically for breaking hard surfaces, though it may assist in other aspects of excavation.

Rake: A rake is generally used for gathering, spreading, or leveling materials like soil, gravel, or leaves. It is not intended for breaking hard surfaces.

Spade: A spade is a digging tool with a flat blade, primarily used for cutting through soil, sod, or loose dirt. It is not ideal for breaking through hard surfaces like rock or concrete.