This means that you'll be able to search for NAICS codes directly (if that's your jam). We'll do the math; let's make better data on public procurement together.
Possible NAICS Codes
237990 – Other Heavy and Civil Engineering Construction
532490 – Other Commercial and Industrial Machinery and Equipment Rental and Leasing
334519 – Other Measuring and Controlling Device Manufacturing
238910 – Site Preparation Contractors