See also. 1  Conversion of units, for comparison with other units of length. 2  Cubic metre. 3  Metric prefix. 4  Mileage. 5  Odometer. 6  Orders of magnitude (length) 7  Square kilometre.
Wool is the fiber from the fleece of the sheep or lamb or hair of the Angora or Cashmere goat (and may include the so-called specialty fibers from the hair of the camel, alpaca, llama, and vicuna) which has never been reclaimed from any woven or felted wool product. Virgin wool and new wool are also used to refer to such never used wool.
The term mineral wool typically refers to two types of insulation material: 1  Rock wool, a man-made material consisting of natural minerals like basalt or diabase. 2  Slag wool, a man-made material from blast furnace slag (the scum that forms on the surface of molten metal).