Which of the following is NOT a matter the site senior executive must keep track of at the mine?

The site senior executive is responsible for various critical aspects of mining operations, all aimed at ensuring safety, compliance with regulations, and efficient functioning of the mine. Keeping track of the extent of workings, topographical features, and potential inrush sources is essential because these elements directly impact safety, planning, and operational efficiency.

The extent of workings refers to how far the mining activity has progressed, which is crucial for managing resources and ensuring that operations are conducted safely within defined areas. Understanding topographical features is vital for assessing risks and planning activities around natural landscape attributes that may impact mining activities. Monitoring potential inrush sources involves identifying areas of risk, such as water or mudflow, to prevent dangerous situations that could endanger workers and the environment.

On the other hand, daily employee schedules, while important, are not typically the responsibility of the site senior executive in the same way. These schedules are generally managed by HR or operational management to ensure that the workforce is adequately planned and deployed. Thus, daily employee schedules do not fall within the primary focus of the senior executive's oversight, creating a distinction from the safety and operational metrics they primarily track at the mine.