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This paper studies the Roșia Jiu quarry area in Romania. This research highlights the working method of hydraulic excavators and the values of particles released into the atmosphere by them. Improving technological equipment not only helps build a better world, but also restores and preserves the environment. The measurements were made during 2020, using DSM501A sensors, which were located at four points in the quarry, namely in the north, southeast and west of the quarry.

Measurements of PM10 particles made in the Rosia of Jiu quarry as a result of the use of Komatsu PC4000-11 hydraulic excavator