Wondering if the rope was a cheaper " all purpose" use, or used by an arborist/climber?
speculation.
GRAINGER APPROVED 3/8" dia. Composite All Purpose General Utility Rope, Black Tracer/White, 600 ft. - 45AU86|720120-W1B-00600-07209 - Grainger
"Product Details
Biodegradable Light-Duty Composite Twisted Rope is made from economically priced fibers and makes a good general-purpose utility rope.
SNAPBACK SAFETY WARNING: A dangerous situation occurs if personnel are in line with a rope under tension. Should the rope fail, it may recoil with considerable force. Death may result. Warn people against standing in line with the rope or its bight. To help ropes last longer: AVOID overloading, abrasion, sudden strain, kinks, sharp angles, chemicals, and improper storage. Use correct size rope for job, reverse ends of rope, and keep rope clean."
"ARBORIST ROPE CONSTRUCTION TYPES
Kernmantle -
The mantle (cover) of this rope is woven tight to provide protection for the load-bearing core (up to 70%) strands, which are not woven (parallel). Core strands can also be twisted like a slinky to add elasticity, providing manufacturers a lot of flexibility to manipulate the finished product based on intended use.
Good for a wide range of duties.
Arborist ascent lines of this construction are considered “cover-dependent kernmantles.”
https://www.sherrilltree.com/media/pdf/printcatalog/1_cover-40-SHERRILLtree-Master-2016.pdf
Kernmantle rope - Wikipedia
Use as climbing rope
Internal structure of a 10.7 mm
dynamic kernmantle climbing rope
Nylon ropes that were used in
yachts for hauling were tested and found useful in
climbing and
caving and are now the modern standard. The German company Edelrid introduced the first kernmantel rope in 1953, which revolutionized fall prevention.
Hemp climbing rope became a thing of the past and rope breakage was greatly reduced. In 1964, Edelrid and Mammut
[1] both developed
dynamic ropes capable of withstanding multiple falls. These became the forerunner of the modern dynamic climbing rope. Although there were occasional innovations, the rope used today is similar in construction, strength, and durability across manufacturers