|
| 3319 | Abacus, wooden, manufacturing | |
| 3111 | Abattoir | |
| 3824 | Abattoir machinery manufacturing | |
| 3851 | Abdominal supporter manufacturing | |
| 3699 | Abrasive cloth manufacturing | |
| 3699 | Abrasive grain manufacturing | |
| 3699 | Abrasive grinding wheel manufacturing, except dental | |
| 3699 | Abrasive manufacturing | |
| 3699 | Abrasive paper manufacturing | |
| 3699 | Abrasive polishing rouge manufacturing | |
| 2901 | Abrasive sand quarrying | |
| 3699 | Abrasive steel shot manufacturing | |
| 2909 | Abrasive stone mining | |
| 3411 | Absorbent paper manufacturing | |
| 3220 | Academic cap manufacturing | |
| 3220 | Academic gown cutting and sewing | |
| 9310 | Academy, school | |
| 3851 | Accelerometer manufacturing | |
| 8102 | Acceptance house | |
| 8200 | Accident insurance underwriting or selling | |
| 9399 | Accident prevention association | |
| 3902 | Accordion manufacturing | |
| 3212 | Accordion pleating | |
| 3420 | Account book manufacturing | |
| 8322 | Accountant, self-employed | |
| 3511 | Acetaldehyde manufacturing | |
| 3511 | Acetin manufacturing | |
| 3511 | Acetylene gas manufacturing | |
| 3811 | Acetylene gas torch manufacturing | |
| 3819 | Acetylene lamp manufacturing | |
| 3823 | Acetylene welding and cutting machine manufacturing | |
| 3511 | Acid manufacturing | |
| 3530 | Acid oil manufacturing | |
| 3511 | Acid, acetic, synthetic, manufacturing | |
| 3851 | Acidity gauge manufacturing | |
| 3112 | Acidophilus milk manufacturing | |
| 8200 | Actuary, consultant | |
| 3825 | Adding machine manufacturing | |
| 3419 | Adding machine paper roll manufacturing | |
| 8329 | Address listing service | |
