What type of knot is recommended for connecting downlines to trunklines?

• A. Square knot
• B. Double half hitch
• C. Clove hitch
• D. Figure-eight knot

Answer: (B)

The double half hitch is recommended for connecting downlines to trunklines because it creates a secure and stable connection that can withstand tension and dynamic loads, which is essential in mining operations. This knot is particularly effective because it can be easily adjusted and is less likely to slip compared to some other types of knots. The design of the double half hitch allows it to grip firmly on the trunkline while providing a reliable attachment point for the downline, ensuring safety and efficiency during lifting and hauling operations.

In contrast, other knots, while useful in various applications, may not provide the same level of security or ease of adjustment for this specific task. The square knot, for instance, is best suited for joining two ends of rope of similar size, but it can be prone to loosening under load. The clove hitch is often used for securing a rope to a post or similar object, but it is not ideal for connecting two lines under tension. Lastly, the figure-eight knot is primarily used for creating a fixed loop and is not suitable for connecting downlines to trunklines directly.