Boulton had turned his attention to coinage in the mid-1780s; they were just another small metal product like those he manufactured. He also had shares in several Cornish copper mines, and had a large personal stock of copper, purchased when the mines were unable to dispose of it elsewhere. However, when orders for counterfeit money were sent to him, he refused them: "I will do anything, short of being a common informer against particular persons, to stop the malpractices of the Birmingham coiners." In 1788 he established the Soho Mint as part of his industrial plant. The mint included eight steam-driven presses, each striking between 70 and 84 coins per minute. The firm had little immediate success getting a licence to strike British coins, but was soon engaged in striking coins for the British East India Company for use in India.