What is a Lanyard primarily used for in mining safety?

A lanyard is primarily used as a safety device that is secured to a safety belt or harness. In the context of mining, it serves a vital role by preventing workers from falling or being injured from equipment that may drop from heights. When attached to a harness, the lanyard allows for mobility while providing a secure connection to an anchor point, thereby enhancing overall safety in high-risk environments such as underground mines. The other options, while they relate to tools or equipment in some way, do not address the primary safety function that a lanyard fulfills in protecting miners from fall hazards.