What information is included in a quarterly report submitted to MHST?

The correct answer highlights the critical components that a quarterly report must include when submitted to the Mine Health and Safety Administration (MHST). This type of report is primarily focused on operational metrics, which typically encompass details such as accidents that may have occurred at the mine, employment numbers that reflect workforce changes, and the amount of coal mined during the quarter.

These elements are essential for maintaining safety standards, evaluating workforce conditions, and monitoring production levels. Reporting accidents is particularly vital for assessing safety performance and compliance with health regulations. Employment numbers help in understanding labor trends, while the quantity of coal mined is a direct indicator of operational efficiency and productivity.

While plans for future mining operations and new technologies are important considerations within the mining sector, they do not fall within the standardized reporting metrics required in a quarterly report to MHST. Similarly, environmental impact assessments are crucial for broader compliance and sustainability strategies but are typically documented separately and not required in every quarterly operational report. Therefore, option B accurately encapsulates the necessary information required in these reports, ensuring transparency and regulatory compliance within mining operations.