Oneok

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

• Gas Utility Companies
• Oil & Gas Well Service

North American Industry Classification System (NAICS) Categories:

• Support Activities For Oil And Gas Operations
• Natural Gas Distribution > Natural Gas Companies

Standard Industry Classification (SIC) Categories:

• Oil & Gas Field Services, Nec
• Gas Production &/Or Distribution