Spectra

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

• Gas Producers
• Water, Sewer & Utility Lines

North American Industry Classification System (NAICS) Categories:

• Natural Gas Distribution
• Water And Sewer Line And Related Structures Construction

Standard Industry Classification (SIC) Categories:

• Constructing Water, Sewer, Power, & Communication Lines And Pipelines
• Gas Production &/Or Distribution