Underground Resource

Underground Resource is also listed under the following categories: Standard Yellow Pages Heading (SYPH) Categories:

• Excavating Contractors
• Geothermal Heating & Cooling Contractors
• Geothermal Heating & Cooling Equipment & Systems Dealers
• Heating Contractors

North American Industry Classification System (NAICS) Categories:

• Plumbing, Heating, And Air-Conditioning Contractors > Heating Contractors
• Plumbing, Heating, And Air-Conditioning Contractors > Geothermal Heating & Cooling Contractors
• Site Preparation Contractors
• Plumbing And Heating Equipment And Supplies (Hydronics) Merchant Wholesalers > Hydronic Heating Equipment > Geothermal Heating & Cooling Equipment & Systems

Standard Industry Classification (SIC) Categories:

• Plumbing, Heating And Air Conditioning > Heating Contractors
• Plumbing, Heating And Air Conditioning > Geothermal Heating & Cooling Contractors
• Excavation Work
• Plumbing And Heating Equipment And Supplies (Hydronics) > Hydronic Heating Equipment > Geothermal Heating & Cooling Equipment & Systems