The bulldozer, also called a dozer, is a construction machine used to move materials, and for demolition, deforestation or leveling work. The bulldozer is sometimes coupled with a scraper that it pushes.
A dozer is a tractor, usually on tracks, equipped with a large front blade, called a bull blade, which can be oriented vertically: it can be lowered to scrape the ground to a depth of about thirty centimeters, or raised to transport materials. . There are different types of bull blade: straight blade, universal blade, semi-universal blade, PAT (“Power Angle Tilt”) blade. Bulldozers equipped with a PAT blade are called "angledozers": their blade can be oriented horizontally. Most dozers have a ripper at the rear to work the soil. The ripper can be single shank, or have 2 or 3 teeth.
Invented in the USA, bulldozers arrived in Europe at the end of World War II to help with reconstruction; some armored models were used on the D-Day landing beaches.
In France, a category 3 Caces including reciprocating mining equipment is required for driving a bulldozer
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