Earth movers are people who work in the construction and mining industries, often using heavy machinery to move earth and other materials. Landslides (10 letters) are when a large mass of rock, earth, or debris moves down a slope due to gravity. TREMORS (7 letters) are vibrations in the ground caused by seismic activity. Dozers (6 letters) are large bulldozers used to move earth and other materials. Seisms (6 letters) are another term for earthquakes. Hoes (4 letters) are tools used to break up soil and rocks. Rockslides (10 letters) are when a large mass of rocks moves down a slope due to gravity.