Bulldozers are considered one of the strongest and most reliable heavy equipment used in the construction industry. It is powerful and extremely heavy equipment used to move dirt along large open tracts of land. Bulldozers have a wide flat blade in front that can be operated using two hydraulic pistons allowing the blade to be moved in limited angles or depths. They are normally used to push piles of earth and for rough/fine grading depending on the size of the bulldozer. Its weight can be used to crush larger boulders among other actions.