Northern Natural Gas

Northern Natural Gas is also listed under the following categories: Standard Yellow Pages Heading (SYPH) Categories:

• Gas Utility Companies
• Propane Gas

North American Industry Classification System (NAICS) Categories:

• Natural Gas Distribution > Natural Gas Companies
• Liquefied Petroleum Gas (Bottled Gas) Dealers > Bottled & Bulk Gas > Gas Natural & Propane Equipment

Standard Industry Classification (SIC) Categories:

• Gas Production &/Or Distribution
• Liquefied Petroleum Gas (Bottled Gas) Dealers > Bottled & Bulk Gas > Gas Natural & Propane Equipment