just for clarification, the failed kong in this article is a "backup" not the "duck". If you have the full report, it also claims that the kong slid down the rope and sheath had minimal to no damage. I have heard about the ropeman cutting the rope, but wasn't able to find that report.http://itrsonline.org/wordpress/wp-content/uploads/2015/02/013.Reed_.2014.pdf
two foot fall and failure
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