Komatsu Shovel PC4000 Loading Cat 785B.
Komatsu Crawler Excavator PC4000
Machines used for excavating earth and rocks and loading them on a dump truck. The size ranges from small ones
(PC78MR-6) used in civil engineering to super large ones used in mines
(PC8000-6). Crawler excavators are capable of a wide variety of work by changing a front attachment.
Komatsu Limited is a multinational corporation that manufactures construction, mining, and military equipment, industry machinery such as press machines, lasers, and Thermoelectric modules. Its headquarters is at 2-3-6, Akasaka, Minato, Tokyo, Japan. Its name was taken after the current city of Komatsu, Ishikawa at the company's foundation there in 1917.
Komatsu is the world's second largest manufacturer of construction equipment and mining equipment after Caterpillar. However, in some areas (Japan, China, Middle East), Komatsu has a larger share than Caterpillar. It has manufacturing operations in Japan, Asia, Americas and Europe.
Wikipedia, Komatsu Limited.
Caterpillar Inc. is a United States-based corporation headquartered in Peoria, Illinois. Caterpillar is, according to their corporate website, "the world's largest manufacturer of construction and mining equipment, diesel and natural gas engines, and industrial gas turbines." Caterpillar produces a wide range of heavy equipment, including the range of Caterpillar bulldozers. Caterpillar's line of vehicles range from tracked tractors to hydraulic excavators, backhoe loaders, motor graders, off-highway trucks, wheel loaders, and agricultural tractors. They are used in construction, road-building, mining, forestry, energy, transportation and material-handling industries.
Caterpillar is one of the thirty companies whose stock is tracked in the Dow Jones Industrial Average. It is a Fortune 500 company, ranked number 50 in 2008, and first in its industry, with more than $30 billion in assets. Source: