Powder mill

A powder mill was a mill where gunpowder is made from sulfur, saltpeter and charcoal. Crude grinding and mixing operations like the Frankford Powder-Mill of Philadelphia were a cottage industry until the industrial revolution brought improved product quality through the following procedures:

Powder mill

A powder mill was a mill where gunpowder is made from sulfur, saltpeter and charcoal. Crude grinding and mixing operations like the Frankford Powder-Mill of Philadelphia were a cottage industry until the industrial revolution brought improved product quality through the following procedures: