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Mining and Construction

The mining division includes all establishments primarily engaged in mining. The term “mining” is used in the broad sense to include the extraction of minerals occurring naturally. This includes solids, such as coal and ores; liquids, such as crude petroleum; and gases, such as natural gas. The term “mining” is also used in the broad sense to include quarrying, well operations, milling (i.e., crushing, screening, washing, and flotation), and other preparation customarily done at the mine site, or as a part of mining activity.

Exploration and development of mineral properties are included in this division. Services performed on a contract or fee basis in the development or operation of mineral properties are classified separately but within this division. Establishments with complete responsibility for operating mines, quarries, or oil and gas wells for others on a contract or fee basis are classified according to the product mined rather than as mineral services.

Mining operations are classified by industry on the basis of the principal mineral produced, or, if there is no production, on the basis of the principal mineral for which exploration or development work is in process. The mining of culm banks, ore dumps, and tailing piles is classified as mining according to the principal mineral product derived.

The construction division includes establishments primarily engaged in construction. The term “construction” includes new work, additions, alterations, reconstruction, installations, and repairs. Construction activities are generally administered or managed from a relatively fixed place of business, but the actual construction work is performed at one or more different sites. If a company has more than one relatively fixed place of business from which it undertakes or manages construction activities and for which separate data on the number of employees, payroll, receipts, and other records are maintained, each such place of business is considered a separate construction establishment.

Three broad types of construction activity are covered: building construction by general contractors or operative builders, heavy construction other than building by general contractors and special trade contractors, and construction activity by other special trade contractors. Special trade contractors are primarily engaged in specialized construction activities such as plumbing, painting, and electrical work, and work for general contractors under subcontract or directly for property owners. General contractors usually assume responsibility for an entire construction project, but may subcontract to others all of the actual construction work or those portions of the project that require special skills or equipment. General contractors thus may or may not have construction workers on their payroll.

Mining and Construction

Building Construction General Contractors and Operative Builders

Coal Mining

Construction Special Trade Contractors

Heavy Construction Other Than Building Construction Contractors

Metal Mining

Mining and Quarrying of Nonmetallic Minerals, Except Fuels

Oil and Gas Extraction