Census of Mineral Industries/Mining

Description & Updates


The Mining sector comprises establishments that extract naturally occurring mineral solids, such as coal and ores; liquid minerals, such as crude petroleum; and gases, such as natural gas. The term mining is used in the broad sense to include quarrying, well operations, beneficiating (e.g., crushing, screening, washing, and flotation), and other preparation customarily performed at the mine site, or as a part of mining activity.

The Mining sector distinguishes two basic activities: mine operation and mining support activities. Mine operation includes establishments operating mines, quarries, or oil and gas wells on their own account or for others on a contract or fee basis. Mining support activities include establishments that perform exploration (except geophysical surveying) and/or other mining services on a contract or fee basis.

Comparability with SIC data

Changes to the mining sector were minor, but mining now excludes portions of industries that are now included in services sectors. Prominent among these industries are geophysical surveying and mapping services for metal mining, oil and gas extraction, and nonmetallic minerals mining.

Another change resulting from the conversion to NAICS is that data for mining auxiliary establishments are not included with the mining data; these establishments are now classified in a particular NAICS industry based on the function of the auxiliary establishment. See the discussion of "Auxiliaries" for additional explanation of the treatment of auxiliary establishments in the 1992 and 1997 Economic Censuses.

Geographic detail

The Economic Census publishes data for the mining sector only for the U.S. and states.


The Census of Mineral Industries is updated by:

[Section Heading]