With Tolvadden? Wheal Jewell, located southeast of St. Day near Crofthandy, encompasses Wheal Quick within its sett. It operated primarily as a copper mine starting around 1815. The mine exploited several lodes, including North Tin, Morcom’s, South Lode, North Wheal Jewell, Wheal Jewell South Copper Lode, and Wheal Jewell South Lode. Key shafts included Morcom’s, Martyn’s, Wheal Quick, Trudgeon’s, Tregella’s, Footway, William’s, New Harvey’s, John’s, Michael’s, Tremayne’s, Caroline’s, Stephen’s, and Richard’s Shafts. Over the period from 1815 to 1853, Wheal Jewell produced 58,160 tons of copper ore averaging 9% in grade.

Mining historian Joseph Yelloly Watson, in his 1843 report titled ‘A Compendium of British Mining,’ noted that Wheal Jewell initially left a profit of £200,000 during its first working phase, after which it remained idle for twenty years. The mine was then reopened about nine years prior to Watson’s report by the Messrs. Williams of Scorrier House. In this short period, it realized profits exceeding £100,000. The sett measured around 200 fathoms in length and 150 in width, with the workings primarily in granite. Operations were supported by one steam-engine and two steam-whims. The adit in Wearne’s shaft was situated 50 fathoms from the surface, with the shaft extending 150 fathoms below the adit. Approximately 300 persons were employed, and from 1834 to June 1842, the mine produced 31,276 tons of copper ore, yielding £214,130 6s. 6d.