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Reference.org
Excavator controls
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<p>Excavator controls specifies ways of how a human operator controls the digging components (i.e. swing, boom, stick, bucket) of a piece of heavy machinery, such as a <a href="/facts/Backhoe/YD09aPtX">backhoe</a> or an <a href="/facts/Excavator/4WNsUkjs">excavator</a>. </p>