The torque on which specific bolt must be determined during the shift?

The correct choice focuses on the importance of monitoring torque for specific bolts during operational shifts to ensure safety and functionality. The 10th bolt is identified as significant because it typically serves as a critical connection in a sequence where maintaining proper torque can directly impact the integrity of the assembly or structure being used in mining operations.

In mining and heavy-duty environments, it's crucial to prevent equipment failure or accidents caused by loose bolts. The 10th bolt often has additional factors affecting its torque value due to accumulated stresses from prior bolts or its position in the assembly. By paying particular attention to this bolt, foremen can ensure that appropriate torque specifications are met, which contributes to overall operational safety.

The emphasis on specific bolts, such as the 10th, stems from engineering practices that recognize the need for periodic checks in an ordered sequence, where certain bolts may play a role that is heightened due to their locations or the forces acting upon them during equipment operation. Thus, assessing torque on this bolt during shifts becomes a critical task for maintaining the equipment's integrity and safety standards in the mining environment.