Wheal Alfred in the parish of Phillack, Cornwall, in the deanery and in the east division of the hundred of Penwith, lies about four miles and a half east-south-east from St. Ives
- "In 1811 the average duty of the three engines (Boulton and Watt's) on Wheal Alfred Mine was about twenty millions. These engines were at that time reckoned the best in the county." (Trevithick)
- 1812 "Captain Artha recollects at Wheal Alfred Mine in 1812 the 66-inch cylinder pumping engine used a pole air-pump one or two whim-engines on the same mine also used them." (Trevithick)
- 1812 "At Wheal Alfred they have a 64-inch cylinder; the air-pump is 20 inches, and the stroke is half that of the engine. They were afraid that it was too small; they then put another of 14 inches by the side of the first, the same stroke." (Richard Trevithick)
- 1813 "I have also been obliged to take the small portable engine from Wheal Alfred Mine and have new apparatus fitted to it, to apply this engine for Plymouth Breakwater." (Richard Trevithick)
- 1814 "In this parish is Wheal-Alfred, one of the richest mines now worked in the county"
- 1848 "The Great Wheal Alfred, a copper-mine which formerly yielded 1,000 tons of ore per month, and some other mines, are within the parish; but none are at present in operation, except the North Wheal Alfred, and even that is barely productive."
- 1860 Alfred, Wheal. Phillack, Cornwall, silver 
Sources of Information
- . From: 'Parishes: Otterham - Probus', Magna Britannia: volume 3: Cornwall (1814), pp. 251-274.
- . From: 'Pevensey - Pickworth', A Topographical Dictionary of England (1848), pp. 564-567