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Blast furnaces, 1683. Artist: Unknown
 
Refining copper using the 'Hungarian' process, 1683. Artist: Unknown
 
Assayer testing samples of gold and silver, 1683. Artist: Unknown
 
Washing ore to extract gold, 1683. Artist: Unknown
 
Smelting of copper, 1683. Artist: Unknown
 
Washing ore to extract gold, 1683. Artist: Unknown
 
Furnace for processes where protracted heat required, such as cementation, 1580. Artist: Unknown
 
Athanor or 'Slow Harry', a self-feeding furnace maintaining a constant temperature, 1683. Artist: Unknown
 
Athanor or 'Slow Harry', a self-feeding furnace maintaining a constant temperature, 1683. Artist: Unknown
 
Distillation of Nitric Acid, 1683. Artist: Unknown
 
Laboratory for refining gold and silver, showing typical laboratory equipment, 1683. Artist: Unknown
 
Production of saltpetre (nitre, potassium nitrate, or KN03), 1683. Artist: Unknown
 
Checking the quality of saltpetre (nitre, potassium nitrate, or KN03), 1683. Artist: Unknown
 
Crystallization of saltpetre (nitre, potassium nitrate, or KN03), 1683. Artist: Unknown