The 2012 NAICS (North American Industrial Classification System) Code for horizontal drilling (directional boring) falls under category 237990 “Other Heavy and Civil Engineering Construction”. Port St Lucie Directional Boring NAICS | United Port St Lucies Census Bureau Port St Lucie Directional Boring NAICS | United Port St Lucies Census Bureau The United Port St Lucies … Continue reading Boring NAICS Code