Crushed and Broken Limestone Mining and Quarrying, Construction Sand and Gravel Mining, Drilling Oil and Gas Wells, Electric Bulk Power Transmission and Control, Electric Power Distribution

Flooring Contractors, Mining Machinery and Equipment Manufacturing, Oil and Gas Field Machinery and Equipment Manufacturing, Office Machinery Manufacturing, Electromedical and Electrotherapeutic Apparatus Manufacturing

Plate Work Manufacturing, Machine Shops, Farm Machinery and Equipment Manufacturing, Construction Machinery Manufacturing, Mining Machinery and Equipment Manufacturing

Farm Machinery and Equipment Manufacturing, Lawn and Garden Tractor and Home Lawn and Garden Equipment Manufacturing, Construction Machinery Manufacturing, Mining Machinery and Equipment Manufacturing, Oil and Gas Field Machinery and Equipment Manufacturing

Support Activities for Oil and Gas Operations, Electroplating, Plating, Polishing, Anodizing, and Coloring, Farm Machinery and Equipment Manufacturing, Mining Machinery and Equipment Manufacturing, Other Commercial and Service Industry Machinery Manufacturing

Mining Machinery and Equipment Manufacturing

Wheat Farming, Power and Communication Line and Related Structures Construction, Other Heavy and Civil Engineering Construction, All Other Miscellaneous Food Manufacturing, Petroleum Refineries

Nursery and Tree Production, All Other Miscellaneous Crop Farming, Forest Nurseries and Gathering of Forest Products, Soil Preparation, Planting, and Cultivating, Support Activities for Forestry

Nonferrous Metal (except Copper and Aluminum) Rolling, Drawing, and Extruding, Iron Foundries, Steel Foundries (except Investment), Other Nonferrous Foundries (except Die-Casting), Fabricated Structural Metal Manufacturing

Iron and Steel Forging, Nonferrous Forging, Plate Work Manufacturing, Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers, Construction Machinery Manufacturing

Construction Sand and Gravel Mining, Paint and Coating Manufacturing, Polish and Other Sanitation Good Manufacturing, Construction Machinery Manufacturing, Mining Machinery and Equipment Manufacturing

Farm Machinery and Equipment Manufacturing, Lawn and Garden Tractor and Home Lawn and Garden Equipment Manufacturing, Construction Machinery Manufacturing, Mining Machinery and Equipment Manufacturing, Turbine and Turbine Generator Set Units Manufacturing

Construction Sand and Gravel Mining, Industrial Sand Mining, Industrial Building Construction, Other Building Equipment Contractors, Site Preparation Contractors

Bituminous Coal and Lignite Surface Mining, Bituminous Coal Underground Mining, Anthracite Mining, Iron Ore Mining, Gold Ore Mining

Poured Concrete Foundation and Structure Contractors, Site Preparation Contractors, All Other Specialty Trade Contractors, All Other Miscellaneous Chemical Product and Preparation Manufacturing, Abrasive Product Manufacturing

SAMINCO

Mining Machinery and Equipment Manufacturing, Ship Building and Repairing, Service Establishment Equipment and Supplies Merchant Wholesalers, Transportation Equipment and Supplies (except Motor Vehicle) Merchant Wholesalers, Engineering Services

Anthracite Mining, Gold Ore Mining, Silver Ore Mining, Lead Ore and Zinc Ore Mining, Copper Ore and Nickel Ore Mining

Poured Concrete Foundation and Structure Contractors, Site Preparation Contractors, All Other Specialty Trade Contractors, All Other Miscellaneous Chemical Product and Preparation Manufacturing, Abrasive Product Manufacturing

Farm Machinery and Equipment Manufacturing, Lawn and Garden Tractor and Home Lawn and Garden Equipment Manufacturing, Construction Machinery Manufacturing, Mining Machinery and Equipment Manufacturing, Oil and Gas Field Machinery and Equipment Manufacturing

WOLFPAC

Construction Machinery Manufacturing, Mining Machinery and Equipment Manufacturing, Pump and Pumping Equipment Manufacturing, Other Commercial and Industrial Machinery and Equipment Rental and Leasing, Engineering Services

AEROMACRO

Construction Machinery Manufacturing, Mining Machinery and Equipment Manufacturing, All Other Miscellaneous General Purpose Machinery Manufacturing

Mining Machinery and Equipment Manufacturing, Oil and Gas Field Machinery and Equipment Manufacturing, Optical Instrument and Lens Manufacturing, All Other Miscellaneous General Purpose Machinery Manufacturing, Other Communications Equipment Manufacturing