Lack of face/workplace 1159 1307 2465 Lack of energy 446 396 842 Lack of transportation mobility 331 373 704 Lack of water/pressure 323 287 610 Lack of operator 260 293 553 Lack of ventilation due to blasting 211 187 397 Others 159 179 338 These results show that lack of face/workplace is the dominant delay factor, followed by service interruptions such as energy and water supply issues. This demonstrates that utilization is mainly limited by operational conditions rather than mechanical reliability. 8.3 Availability and Utilization Behavior The comparison between availability and utilization indicates that even during periods with high mechanical availability, utilization remains relatively low. This confirms that availability alone is not sufficient to guarantee productive operation. Figure 4 – Availability vs Utilization – Total Figure 5 – Availability vs Utilization – Day Shift
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