3. CALCULATION OF MACHINE RATESThe hourly cost of the tractor with operator is called the machine rate. In cases where the machine and the elements of production are not rented, a calculation of the owning and operating costs is necessary to derive the machine rate. The objective in developing a machine rate should be to arrive at a figure that, as nearly.calculation of owning and operating costs of crushers,The owning and operating costs of dump trucks | Equipment World .Oct 6, 2010 . The three-axle dump truck is as integral to construction jobsites as any piece of yellow iron or paving equipment. But unlike off-road equipment, which has seen a number of small, incremental improvements over the past few years, Class 8 dump trucks have enjoyed significant technological progress.Basics in Minerals Processing - BASICS IN MINERAL PROCESSING. CONTENT. Introduction. 1. Minerals in operation. 2. Size reduction. 3. Crushing. Grinding. Size control. 4. Screening .. Discharge opening. Jaw crusher. Gyratory crusher. Rule 1: Always use a jaw crusher if you can, jaws are the least capital cost. Rule 2: For low capacity use jaw.
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