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There are districts that have many small gold and silver mines with ores that do not yield to simple milling processes and which must therefore be shipped to custom smelteries.

I visited a huge smeltery not long ago, and saw how gold and silver were separated from their ores.

The smelteries and rolling-mills are built at places where the materials are most conveniently hauled.

In addition to the tin and precious metals, there are great beds of excellent coal—enough for all the smelteries and manufactories in the island.

He created a Board of Mines, established smelteries, and the day came when, instead of going abroad for its munitions of war, Sweden had for its customers half Europe.