While there have been nationwide concerns over the decline of the British mining industry, one unheralded success story was the Pibble Mine near Wygarth. This isolated location, on the slopes of Mt Pibble, has one of the richest seams of Blaurite, a rare mineral form from layers of metamorphic rocks. Blaurite is a dull grey substance, but when exposed to temperate temperatures, quickly becomes very malleable.
That it is one of the main ingredients of the reusable adhesive known as Blu Tack (and its competitors) remained undiscovered until recent investigations in the area. The mine was opened in the late 19th century, and at its peak employed 120 miners, many of whom were originally from Cornwall. The mine did however close in 1986 after the discovery of a far richer source on the island of Guinea, which could be extracted for as little as a tenth of the Pibble production costs. The closure of the mine led to several protests in Wygarth and further afield.