sic_code,industry_slug,is_primary
1520,construction_engineering,1
1521,construction_engineering,1
1531,construction_engineering,1
1540,construction_engineering,1
1600,construction_engineering,1
1623,construction_engineering,1
1629,construction_engineering,1
1700,construction_engineering,1
1731,construction_engineering,1
2400,construction_engineering,1
2421,construction_engineering,1
2430,construction_engineering,1
2451,construction_engineering,1
2452,construction_engineering,1
3200,construction_engineering,1
3211,construction_engineering,1
3231,construction_engineering,1
3241,construction_engineering,1
3250,construction_engineering,1
3270,construction_engineering,1
3290,construction_engineering,1
3440,construction_engineering,1
3442,construction_engineering,1
3443,construction_engineering,1
3444,construction_engineering,1
3448,construction_engineering,1
3530,construction_engineering,1
3531,construction_engineering,1
8711,construction_engineering,1
8712,construction_engineering,1