Of the less important minerals, Canada is the world's chief producer of asbestos and corundum.
In 1879, Spain was the largest producer, but now ranks third.
The quantity produced from 1845 Cop er the year in which the Lake Superior district became a producer, and in which the total product was only 224,000 lbup to 1908 was 13,106,205,634 lb.
The state of Virginia is the chief producer, followed successively by Georgia, North Carolina, Colorado, Massachusetts, California, Missouri, New York, &c. From Indiana and Ohio a quantity of pyrites is obtained as a by-product in coalmining.
As a producer of iron Russia nevertheless runs France neck and neck for the fourth place amongst the iron-producing countries of the world, her annual output having increased from 1,004,800 metric tons in 1891 to 2,808,000 in 1901 and to 2,900,000 in 1904.