Title: Address to the mining interest of Cornwall on the subject of Messrs. Boulton & Watt's & Mr. Hornblower's engines
Subjects: Steam-engines, Early works to 1850, Coal mines and mining, Early works to 1800
Places: Great Britain
People: James Watt (1736-1819), Josiah Hornblower (1729-1809), Matthew Boulton (1728-1809)