Which document outlines the minimum standards for coal miner examinations in Virginia?

The correct choice highlights the significance of specific regulations that delineate the minimum standards for coal miner examinations in Virginia. The document known as Certification Regulations 4 VAC 25-20 is directly associated with the establishment of these examination standards, ensuring that all coal miners in the state meet set safety and competency requirements. This regulation provides a framework for the evaluation of coal miners' qualifications and is vital for maintaining safety within the mining industry.

In contrast, the other options refer to broader concepts. While Coal Mine Safety Laws encompass a range of safety regulations, they do not focus solely on the specific examinations for miners. Federal Mining Standards provide overarching guidelines that apply on a national level but do not define state-specific requirements. Safety Guidelines for Mines, while relevant to general mine safety practices, do not specifically cover the detailed standards related to miner examinations. Thus, choosing Certification Regulations 4 VAC 25-20 directly aligns with the inquiry about minimum examination standards for coal miners in Virginia.