| 3909 | Artists' hair pencil manufacturing | |
| 3909 | Artists' material and supply manufacturing | |
| 3909 | Artists' maulstick manufacturing | |
| 3909 | Artists' pantograph manufacturing | |
| 3909 | Artists' pastel crayons manufacturing | |
| 3909 | Artists' roman gold manufacturing | |
| 3909 | Artists' sizes manufacturing | |
| 3909 | Artists' water colour manufacturing | |
| 3909 | Artists' water paint manufacturing | |
| 3909 | Artists' wax crayon manufacturing | |
| 3909 | Artists' wax manufacturing | |
| 3699 | Asbestos brake lining manufacturing | |
| 3699 | Asbestos building material manufacturing, except asbestos paper made in building paper mill | |
| 3699 | Asbestos cement sheets, tiles, etc., manufacturing | |
| 3699 | Asbestos engine and boiler packing manufacturing | |
| 3411 | Asbestos filled paper manufacturing | |
| 3699 | Asbestos gasket manufacturing | |
| 3699 | Asbestos grinding and treating, not at mine or quarry | |
| 2909 | Asbestos mining | |
| 3699 | Asbestos oil seal manufacturing | |
| 3699 | Asbestos packing manufacturing | |
| 3699 | Asbestos pad and padding manufacturing | |
| 3411 | Asbestos paper manufacturing | |
| 3699 | Asbestos pipe and boiler covering manufacturing | |
| 3699 | Asbestos product manufacturing, except asbestos paper made in building paper mill | |
| 3699 | Asbestos sheet manufacturing | |
| 3699 | Asbestos siding manufacturing | |
| 3699 | Asbestos sock manufacturing | |
| 3699 | Asbestos table pad and padding manufacturing | |
| 3699 | Asbestos textile manufacturing | |
| 3699 | Asbestos tile manufacturing | |
| 3699 | Asbestos woven board manufacturing | |
| 3699 | Asbestos yarn manufacturing | |
| 3220 | Ascot manufacturing | |
| 3819 | Ash can manufacturing | |
| 9200 | Ash collecting service | |
| 9200 | Ash disposal service | |
| 9200 | Ash removal service | |
| 3560 | Ashtray, plastic, manufacturing | |
| 3540 | Asphalt and tar mixture manufacturing | |