North American Industry Classification System (NAICS) 1997
- 2329 - Other Special Trade Contracting
- 23291 - Fencing and Interlocking Stone Contracting
- 232910 - Fencing and Interlocking Stone Contracting
- 23292 - Residential and Commercial Paving Contracting
- 232920 - Residential and Commercial Paving Contracting
- 23299 - All Other Special Trade Contracting
- 232990 - All Other Special Trade Contracting
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