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Power and technology of the process of extracting and crushing rock pieces, heavy machinery and equipment, a powerful hydraulic hammer that works to break and tap rocks and stones, the concept of engineering, construction and development, engineering professions and jobs in Saudi Arabia4K0:17
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The concept of engineering, construction and development, engineering professions and jobs in Saudi Arabia, power and technology, the process of extracting and crushing rock pieces, heavy machinery and equipment, time frames for the movement of bulldozers working to lift and fill sand and gravel.4K0:09