There are soap and flour mills and metallurgic factories in the town, and iron, copper and lead mines in the neighbouring Sierra de Almenara.
The metallurgic industries are well developed, and consist in the production of iron, steel, machinery, small-arms, lead articles, wire-cables and rails.
The principal industries are, the metallurgic and textile industries in all their branches, milling, brewing and chemicals; paper, leather and silk; cloth, objets de luxe and millinery; physical and musical instruments; sugar, tobacco factories and foodstuffs.
No remarkable specimens of the metallurgic art of an early period have been found, apart perhaps from the silver vase of Entemena, but at a later epoch great excellence was attained in the manufacture of such jewellery as ear-rings and bracelets of gold.
Recent progress is reported in the scientific periodicals, especially in The Iron and Steel Metallurgist, formerly The Metallographist (Boston, Mass.), and Metallurgic (Halle).
SAL AMMONIAC, 1 or Ammonium Chloride, NH4C1, the earliest known salt of ammonia, was formerly much used in dyeing and metallurgic operations.
When these fires occur while the trees are full of sap, a curious mucilaginous matter is exuded from the half-burnt stems; when dry it is of pale reddish colour, like some of the coarser kinds of gum-arabic, and is soluble in water, the solution resembling gumwater, in place of which it is sometimes used; considerable quantities are collected and sold as " Orenburg gum "; in Siberia and Russia it is occasionally employed as a semi-medicinal food, being esteemed an antiscorbutic. For burning in close stoves and furnaces, larch makes tolerably good fuel, its value being estimated by Hartig as only one-fifth less than that of beech; the charcoal is compact, and is in demand for iron-smelting and other metallurgic uses in some parts of Europe.
Like its adjoining provinces, Silesia boasts of a great and varied industrial activity, chiefly represented by the metallurgic and textile industries in all their branches.
The metallurgic industries, favoured by the abundance of coal and iron, are concentrated round the mines.
Besides the mining and metallurgic industries, Bilbao has breweries, tanneries, flour mills, glass works, brandy distilleries, and paper, soap, cotton and mosaic factories.