Search
A Topographical Dictionary of England
… at a modern period, and these are now abandoned. The iron-ore found in the northern parts of the Eastern Moorlands is … their produce carried to the works in the north, where the ore is of great use in fluxing the more obdurate ores there …
Dictionary of Traded Goods and Commodities
… this processed BLUE mineral, that is roasted COBALT ore, or impure cobalt arsenate. In the sixteenth and … in the late seventeenth century. It involved heating the ore in a reverbaratory furnace until the ARSENIC came off in …