Herdwick a "smit") of marking sheep for ownership. Before chemical dyes became available, this dye was made from either iron ore or graphite mixed with grease. For many years the legal method of identifying a particular shepherd's sheep were notches cut out of a sheep's ear, called "lug" marks—now replaced by ear tags. Herdwick The Herdwick is a breed of domestic sheep native to the Lake District of Cumbria in North West England. The name "Herdwick" is derived from the Old Norse "herdvyck", meaning sheep pasture. Though low in lambing capacity and perceived wool quality when compared to more common commercial
Ear protection while still blocking out external noises that can damage hearing. Ear protection Ear protection refers to devices used to protect the ear, either externally from elements such as cold, intrusion by water and other environmental conditions, debris, or specifically from noise. High levels of exposure to noise may result in noise-induced hearing loss. Measures to protect the ear are referred to as hearing protection, and devices for that purpose are called hearing protection devices. In the context of work, adequate hearing protection is that which reduces noise exposure to below 85 dBA over the course of an average work shift