|
| 3312 | Barometers, manufacturing | |
| 5150 | Barometers, wholesale | |
| 2813 | Barometric condensers, manufacturing | |
| 7522 | Barracks and camps, military | |
| 4520 | Barracks, construction | |
| 2023 | Barrel heading and staves, manufacturing | |
| 2927 | Barrels, gun (i.e., 30 mm or less; 1.18 inch or less), manufacturing | |
| 2927 | Barrels, gun (i.e., more than 30 mm; more than 1.18 inch), manufacturing | |
| 2927 | Barrels, gun, manufacturing | |
| 2899 | Barrels, light gauge metal, manufacturing | |
| 5150 | Barrels, new and reconditioned, wholesale | |
| 2023 | Barrels, wood, coopered, manufacturing | |
| 2899 | Barricades, metal, manufacturing | |
| 7411 | Barrister and solicitor, private practice | |
| 5520 | Bars (i.e., drinking places), alcoholic beverage | |
| 5520 | Bars and restaurants, owned and operated for members of organizations only | |
| 2710 | Bars, concrete reinforcing, manufacturing | |
| 5142 | Bars, concrete reinforcing, wholesale | |
| 2710 | Bars, iron or steel, made in steel mills | |
| 2720 | Bars, made in primary copper smelting and refining mills | |
| 5142 | Bars, metal, wholesale | |
| 5142 | Bars, non-ferrous metal, wholesale | |
| 5520 | Bars, owned and operated for member of organization | |
| 5142 | Bars, rods and angles, steel, wholesale | |
| 2710 | Bars, steel, made from purchased steel | |
| 5520 | Bartending and party arranging | |
| 5520 | Bartending service | |
| 5520 | Bartending, sale of liquor | |
| 7499 | Bartering services for businesses | |
| 9309 | Bartering services for individuals | |
| 2411 | Barytes based pigments, manufacturing | |
| 1421 | Barytes mining | |
| 1410 | Basalt, crushed and broken stone, quarrying | |
| 1410 | Basalt, dimension, quarrying | |
| 1810 | Baseball caps, manufacturing | |
| 9241 | Baseball clubs, professional or semiprofessional | |
| 9241 | Baseball clubs, recreational | |
| 5139 | Baseball equipment and supplies, wholesale | |
| 3693 | Baseball equipment, manufacturing | |
| 5239 | Baseball equipment, retail | |
