Moreover, there were offered to view many interesting and instructive working models, various unique exhibits, and thousands of geological specimens. Germany, France, and New South Wales were the leading foreign countries in this building. Great Britain and her numerous colonies occupied the largest collective space. The brilliant outlay of the Cape Colony included 40,000 rough diamonds, and illustrated the method of polishing them. Canada's mineral showing was so ponderous as to exceed the weight of 125 tons. It comprised every known species of mineral, marble, and granite in that country. In this enormous collection we discovered a block of pure nickel weighing 4,600 pounds as well as very large nuggets of native gold and silver. Mexico made its most extensive contributions to this departmental structure. Brazil, the Argentine Republic, Russia, Spain, Greece, Italy, Japan, Belgium, Austria, Ecuador, and other foreign nations were likewise well represented. The most prominent exhibits were grouped in the eastern section of the ground floor. They proved the unexcelled mineral wealth of the United States, particularly in iron, the annual production exceeding 10,000,000 tons. Pennsylvania took the leading place being pre-eminent in her iron and steel industries. Her supremacy in the production of "black diamonds" was manifested by a rich display; one trophy from her immense coal-mines was a shaft of coal sixty-two feet high, and ten feet square. Colorado's fine exhibit of precious metals had, as an appropriate frame, a beautiful pavilion erected entirely from her local products. The abundance of gold in this important mining state is evinced by the fact that twenty-one of her thirty-three counties are producing that most desirable and malleable of all metals. California--nicknamed the "Golden State"--showed among her vast resources gold, silver, platinum, quicksilver, copper, lead, zinc, iron, tin, graphite, crystal, alabaster, corundum, chrysolites, tourmalines, garnets, diamonds, and other gems. Montana had most largely contributed to this departmental structure, and inclosed her display of precious metals in a temple adorned by the famous statue of Justice. Cast from pure silver valuing $315,000, and modeled after the celebrated actress--Mademoiselle Rehan--it was set upon a pedestal of gold, forming altogether a work of art of rare magnificence. Michigan illustrated attractively her great copper industry; the deposits of this metal among the primary rocks of her northern section being the richest in the world. Of special interest were the mining products of New Jersey. This state furnished minerals not found anywhere else; for instance the franklinite--a compound of iron, zinc, and manganese--named from Dr. Franklin. Missouri, the first state in the Union to place exhibits in the Mines Building, environed the same with a beautiful pavilion built from local products.