|
| 2720 | Aluminum foil, made by flat rolling purchased aluminum | |
| 2891 | Aluminum forgings, unfinished, made from purchased aluminum | |
| 2732 | Aluminum foundries (except die-castings) | |
| 2720 | Aluminum freezer foil, made from purchased foil | |
| 2411 | Aluminum hydroxide (i.e., alumina trihydrate), manufacturing | |
| 2720 | Aluminum ingot and other primary production shapes, made in primary aluminum plants | |
| 2720 | Aluminum ingot, made from purchased aluminum | |
| 2899 | Aluminum ladders, manufacturing | |
| 1320 | Aluminum ore mining | |
| 2699 | Aluminum oxide (fused) abrasives, manufacturing | |
| 2720 | Aluminum oxide refining | |
| 2720 | Aluminum paste, made from purchased aluminum | |
| 2720 | Aluminum pipe and tube, made from purchased aluminum | |
| 4520 | Aluminum plant construction, general contractors | |
| 2720 | Aluminum plate, made from purchased aluminum | |
| 2720 | Aluminum powder, made from purchased aluminum | |
| 2720 | Aluminum rod, made by extruding purchased aluminum | |
| 2720 | Aluminum rolling, casting, extruding | |
| 2720 | Aluminum sheet, made by flat rolling purchased aluminum | |
| 4520 | Aluminum siding, installation | |
| 2411 | Aluminum sulphate, manufacturing | |
| 3130 | Aluminum wire and cable, insulated, made in wire drawing plants | |
| 2720 | Aluminum wire and cable, uninsulated, made in wire drawing plants | |
| 2720 | Aluminum wire made in rolling mill | |
| 2720 | Aluminum, producing from bauxite or alumina | |
| 2720 | Aluminum, recovering from scrap or dross | |
| 5233 | Aluminumware stores, retail | |
| 5139 | Aluminumware, wholesale | |
| 9199 | Alumni associations | |
| 9199 | Alumni clubs | |
| 2411 | Alums (e.g., aluminum ammonium sulphate, aluminum potassium sulphate), manufacturing | |
| 1421 | Alunite mining | |
| 9213 | AM radio stations | |
| 2924 | Amalgamators (i.e., metallurgical and mining machinery), manufacturing | |
| 2423 | Amalgams, dental, manufacturing | |
| 5139 | Amateur radio communications equipment, wholesale | |
| 7512 | Amateur sports program, federal government | |
| 9241 | Amateur sports teams, recreational | |
| 9241 | Amateur sports teams, spectator sports | |
| 2429 | Amatols, manufacturing | |
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