Construction, concrete processing:
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Electric machine grinder
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Electric hand grinder
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Diesel engine
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Hammering a brick wall
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Bobcat loader works, loads
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Construction, destruction of glass and
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Crane
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Road construction, laying,, skating rink
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Concrete mixer
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Electric surface grinding machine
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Bobcat loader starts up, shuts down, waits
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Tool belt thrown to the ground
★★★★★