GREAT LAKES MINERAL WORKS LLC

Dimension Stone Mining and Quarrying

This includes establishments primarily engaged in developing the mine site and/or mining or quarrying dimension stone (i.e., rough blocks and/or slabs of stone).

Crushed and Broken Limestone Mining and Quarrying

This includes (1) establishments primarily engaged in developing the mine site, mining or quarrying crushed and broken limestone (including related rocks, such as dolomite, cement rock, marl, travertine, and calcareous tufa) and (2) preparation plants primarily engaged in beneficiating limestone (e.g., grinding or pulverizing).

Crushed and Broken Granite Mining and Quarrying

This includes (1) establishments primarily engaged in developing the mine site, and/or mining or quarrying crushed and broken granite (including related rocks, such as gneiss, syenite (except nepheline), and diorite) and (2) preparation plants primarily engaged in beneficiating granite (e.g., grinding or pulverizing).

Other Crushed and Broken Stone Mining and Quarrying

This includes: (1) establishments primarily engaged in developing the mine site and/or mining or quarrying crushed and broken stone (except limestone and granite); (2) preparation plants primarily engaged in beneficiating (e.g., grinding and pulverizing) stone (except limestone and granite); and (3) establishments primarily engaged in mining or quarrying bituminous limestone and bituminous sandstone.

Illustrative Examples:

Bituminous limestone mining and/or beneficiating
Marble crushed and broken stone mining and/or beneficiating
Bituminous sandstone mining and/or beneficiating
Sandstone crushed and broken stone mining and/or beneficiating

Construction Sand and Gravel Mining

This includes establishments primarily engaged in one or more of the following: (1) operating commercial grade (i.e., construction) sand and gravel pits; (2) dredging for commercial grade sand and gravel; and (3) washing, screening, or otherwise preparing commercial grade sand and gravel.

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.

Highway, Street, and Bridge Construction

Establishments in this category are primarly engaged in the construction of highways (including elevated), streets, roads, airport runways, public sidewalks, or bridges. The work performed may include new work, reconstruction, rehabilitation, and repairs. Specialty trade contractors are included in this industry if they are engaged in activities primarily related to highway, street, and bridge construction (e.g., installing guardrails on highways).

Illustrative Examples:

Airport runway construction
Highway line painting
Causeway construction
Painting traffic lanes or parking lot lines
Culverts, highway, road, and street, construction
Pothole filling, highway, road, street, or bridge
Elevated highway construction
Resurfacing, highway, road, street, or bridge
Guardrail construction
Sign erection, highway, road, street, or bridge

Poured Concrete Foundation and Structure Contractors

Establishments in this category are primarly engaged in pouring and finishing concrete foundations and structural elements. This industry also includes establishments performing grout and shotcrete work. The work performed may include new work, additions, alterations, maintenance, and repairs.

Illustrative Examples:

Concrete pouring and finishing
Gunite contractors
Concrete pumping (i.e., placement)
Mud-jacking contractors
Concrete work (except paving)
Shotcrete contractors
Footing and foundation concrete contractors

Ready-Mix Concrete Manufacturing

This category includes establishments, such as batch plants or mix plants, primarily engaged in manufacturing concrete delivered to a purchaser in a plastic and unhardened state. Ready-mix concrete manufacturing establishments may mine, quarry, or purchase sand and gravel.

Concrete Block and Brick Manufacturing

This includes establishments primarily engaged in manufacturing concrete block and brick.

Other Concrete Product Manufacturing

Establishments in this category are primarly engaged in manufacturing concrete products (except block, brick, and pipe).

All Other Miscellaneous Nonmetallic Mineral Product Manufacturing

This includes establishments primarily engaged in manufacturing nonmetallic mineral products (except pottery, ceramics, and plumbing fixtures; clay building materials and refractories; glass and glass products; cement; ready-mix concrete; concrete products; lime; gypsum products; abrasive products; cut stone and stone products; ground and treated minerals and earth; and mineral wool).

Illustrative Examples:

Dry mix concrete manufacturing
Mica products manufacturing
Manmade and engineered proppants (e.g., resin-coated sand, ceramic materials) manufacturing
Stucco and stucco products manufacturing
Synthetic stones, for gem stones and industrial use, manufacturing

Brick, Stone, and Related Construction Material Merchant Wholesalers

Establishments in this category are primarly engaged in the merchant wholesale distribution of stone, cement, lime, construction sand, and gravel; brick; asphalt and concrete mixtures; and/or concrete, stone, and structural clay products.