CLARK INDUSTRIAL, INC.

Support Activities for Forestry

Establishments in this category are primarly engaged in performing particular support activities related to timber production, wood technology, forestry economics and marketing, and forest protection. These establishments may provide support activities for forestry, such as estimating timber, forest firefighting, forest pest control, treating burned forests from the air for reforestation or on an emergency basis, and consulting on wood attributes and reforestation.

Drilling Oil and Gas Wells

This includes establishments primarily engaged in drilling oil and gas wells for others on a contract or fee basis. This industry includes contractors that specialize in spudding in, drilling in, redrilling, and directional drilling.

Support Activities for Oil and Gas Operations

This includes establishments primarily engaged in performing support activities, on a contract or fee basis, for oil and gas operations (except geophysical surveying and mapping, site preparation, construction, and transportation activities). Services included are exploration; excavating slush pits and cellars, well surveying; running, cutting, and pulling casings, tubes, and rods; cementing wells, shooting wells; perforating well casings; acidizing and chemically treating wells; and cleaning out, bailing, and swabbing wells.

Support Activities for Coal Mining

This includes establishments primarily engaged in providing support activities for coal mining (except geophysical surveying and mapping, site preparation, construction, and transportation activities) on a contract or fee basis. Exploration for coal is included in this industry. Exploration services include traditional prospecting methods, such as taking core samples and making geological observations at prospective sites.

Support Activities for Metal Mining

This includes establishments primarily engaged in providing support activities (except geophysical surveying and mapping, site preparation, construction, and transportation activities), on a contract or fee basis, for the mining and quarrying of metallic minerals and for the extraction of metal ores. Exploration for these minerals is included in this industry. Exploration services include traditional prospecting methods, such as taking core samples and making geological observations at prospective sites.

Support Activities for Nonmetallic Minerals (except Fuels) Mining

This includes establishments primarily engaged in providing support activities, on a contract or fee basis, for the mining and quarrying of nonmetallic minerals (except fuel) and for the extraction of nonmetallic minerals (except geophysical surveying and mapping, site preparation, construction, and transportation activities). Exploration for these minerals is included in this industry. Exploration services include traditional prospecting methods, such as taking core samples and making geological observations at prospective sites.

Structural Steel and Precast Concrete Contractors

Establishments in this category are primarly engaged in (1) erecting and assembling structural parts made from steel or precast concrete (e.g., steel beams, structural steel components, and similar products of precast concrete) and/or (2) assembling and installing other steel construction products (e.g., steel rods, bars, rebar, mesh, and cages) to reinforce poured-in-place concrete. The work performed may include new work, additions, alterations, maintenance, and repairs.

Illustrative Examples:

Concrete product (e.g., structural precast, structural prestressed) installation
Rebar contractors
Erecting structural steel
Reinforcing steel contractors
Placing and tying reinforcing rod at a construction site
Structural steel contractors
Precast concrete panel, slab, or form installation

All Other Specialty Trade Contractors

Establishments in this category are primarly engaged in specialized trades (except foundation, structure, and building exterior contractors; building equipment contractors; building finishing contractors; and site preparation contractors). The specialty trade work performed includes new work, additions, alterations, maintenance, and repairs.

Illustrative Examples:

Billboard erection
Outdoor swimming pool construction
Paver, brick (e.g., driveway, patio, sidewalk), installation
Crane rental with operator
Paving, residential and commercial driveway and parking lot
Sandblasting building exteriors
Fence installation
Scaffold erecting and dismantling
Interlocking brick and block installation
Steeplejack work
Manufactured (mobile) home set up and tie-down work
Driveway paving or sealing