1099  Miscellaneous Metal Ores, Not Elsewhere Classified, and 1061,
Ferroalloy Ores, Except Vanadium

Industry 1099, Miscellaneous Metal Ores, Not Elsewhere Classified:
Establishments primarily engaged in mining, milling, or otherwise preparing
miscellaneous metal ores, not elsewhere classified.  Production of metallic
mercury by furnacing or retorting at the mine site is also included.

Industry 1061  Ferroalloy Ores, Except Vanadium:
Establishments primarily engaged in mining, milling, or otherwise preparing
ferroalloy ores, except vanadium. The mining of manganiferous ores valued
chiefly for their iron content is classified in industry 1011.
Establishments primarily engaged in mining vanadium ore are classified in
industry 1094, and those mining titanium ore are classified in industry
1099.