In coal mining, how is a cap block typically used?

In coal mining, a cap block is primarily employed to prevent coal from falling. This function is crucial for maintaining safety within the mining environment, as coal can become unstable, especially during the extraction process. The cap block serves as a support structure that helps to stabilize the coal and ensure that it remains securely in place until it is ready to be mined. This reduces the risk of coal falls, which can pose significant dangers to miners and equipment.

While other applications exist in mining operations, such as securing ventilation or managing hazards, the specific role of a cap block aligns directly with stabilizing the mined material, making it an essential component in ensuring a safe and efficient coal extraction process.