Mays Calvin

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

• Excavating Contractors
• Oil & Gas Well Service
• Welding Services

North American Industry Classification System (NAICS) Categories:

• Support Activities For Oil And Gas Operations
• Site Preparation Contractors
• Commercial And Industrial Machinery And Equipment (Except Automotive And Electronic) Repair And Maintenance

Standard Industry Classification (SIC) Categories:

• Oil & Gas Field Services, Nec
• Excavation Work
• Welding Repair