A bulldozer, excavator, and backhoe are all forms of heavy construction equipment. Generally what is meant by the term is is a heavy-duty vehicle designed for construction tasks.

Have a look at www.heavy-equipment-training.com/national-heavy-equipment-operator-school.cfm. The website will tell you more about becoming certified in heavy construction equipment certification.

Professions that require you to carry heavy equipment are welding, construction workers, petroleum engineers.

Bull India is the leading Construction Equipment Manufacturers in India. We provide heavy doze suppliers equipment. Bull India which also helps in Road construction machinery.

Why are you particularly interested in Komatsu Construction and Mining Equipment? What kind of construction work are you involved in? There is one company Abdul Latif Jameel, a heavy equipment construction company that offers the same equipment. You could approach them.