How frequently should ground control inspections be performed following adverse weather conditions?

Ground control inspections are critical to ensuring safety and stability in mining environments, especially after adverse weather conditions. The selection of "after every rain, freeze, thaw, and blasting" is correct because each of these events can significantly impact the ground conditions.

Rainfall can saturate the ground, leading to potential flooding or slides. Freezing and thawing cycles create ice that can weaken rock structures and cause slips or falls. Blasting not only alters the physical landscape but can also induce fractures or disturbances within the surrounding rock, which necessitates careful inspection to assess any resulting instability or hazards.

By requiring inspections after these specific weather and activity events, it ensures that any new risks are promptly identified and mitigated, maintaining a safe working environment. Regular inspections in response to these conditions allow for a proactive approach in spotting and addressing any potential hazards that may arise, thereby protecting workers and equipment.