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Operating engineers work for a variety of construction companies as well as manufacturers and government agencies. Whatever the employer, operating engineers run power shovels, cranes, derricks, hoists, pile drivers, concrete mixers, paving machines, trench excavators, bulldozers, tractors, and pumps. They use these machines to move construction materials, earth, logs, coal, grain, and other material. Generally, operating engineers move the materials over short distances: around a construction site, factory, or warehouse, or on and off trucks and ships. They also do minor repairs on the equipment, as well as keep them fueled and lubricated. They often are identified by the machines they operate.
Bulldozer operators operate the familiar bulldozer, a tractor-like vehicle with a large blade across the front for moving rocks, trees, earth, and other obstacles from construction sites. They also operate trench excavators, road graders, and similar equipment.
Crane and tower operators lift and move materials, machinery, or other heavy objects with mechanical booms and tower and cable equipment. Although some cranes are used on construction sites, most are used in manufacturing and other industries.
Excavation and loading machine operators handle machinery equipped with scoops, shovels, or buckets to excavate earth at construction sites and to load and move loose materials, mainly in the construction and mining industries.
Hoist and winch operators lift and pull heavy loads using power-operated equipment. Most work in loading operations in construction, manufacturing, logging, transportation, public utilities, and mining.
Operating engineers use various pedals, levers, and switches to run their machinery. For example, crane operators may rotate a crane on its chassis, lift and lower its boom, or lift and lower the load. They also use various attachments to the boom such as buckets, pile drivers, or heavy wrecking balls. When a tall building is being constructed, the crane and its operator may be positioned several hundred feet off the ground.
Operating engineers must have very precise knowledge about the capabilities and limitations of the machines they operate. To avoid tipping over their cranes or damaging their loads, crane operators must be able to judge distance and height and estimate their load size. They must be able to raise and lower the loads with great accuracy. Sometimes operators cannot see the point where the load is to be picked up or delivered. At these times, they follow the directions of other workers using hand or flag signals or radio transmissions.
The range of skills of the operating engineer is broader than in most building trades as the machines themselves differ in the ways they operate and the jobs they do. Some operators know how to work several types of machines, while others specialize with one machine.
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