How long is a single entry drive defined as?

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Study for the Queensland Coal Mining Ventilation Officer Law Exam. Study with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Multiple Choice

How long is a single entry drive defined as?

Explanation:
A single entry drive is defined by its length: it must be longer than 350 meters. This threshold matters because longer drives with a single intake/exhaust path require special ventilation planning and safety considerations, since air movement and contaminant control become more complex over greater distances. If a drive is exactly 350 meters, it does not meet the “longer than 350 meters” criterion, so it would not be classified as a single entry drive under this rule. Shorter lengths (such as 100 meters or 200–300 meters) do not meet the threshold either and fall into other ventilation classifications.

A single entry drive is defined by its length: it must be longer than 350 meters. This threshold matters because longer drives with a single intake/exhaust path require special ventilation planning and safety considerations, since air movement and contaminant control become more complex over greater distances. If a drive is exactly 350 meters, it does not meet the “longer than 350 meters” criterion, so it would not be classified as a single entry drive under this rule. Shorter lengths (such as 100 meters or 200–300 meters) do not meet the threshold either and fall into other ventilation classifications.

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