Williams-Northwest Pipeline Corporation

Williams-Northwest Pipeline Corporation is also listed under the following categories: Standard Yellow Pages Heading (SYPH) Categories:

• Crude Petroleum & Natural Gas
• Gas Pipelines

North American Industry Classification System (NAICS) Categories:

• Crude Petroleum And Natural Gas Extraction
• All Other Pipeline Transportation > Gas Pipelines

Standard Industry Classification (SIC) Categories:

• Crude Petroleum & Natural Gas
• Pipelines, Nec > Gas Pipelines