| 7430 | Sample direct distribution services | |
| 3312 | Sample preparation apparatus, laboratory type, manufacturing | |
| 2222 | Samples and displays mounting | |
| 7413 | Sampling services, statistical | |
| 4520 | Sanatoria, construction | |
| 8511 | Sanatorium, tuberculosis | |
| 1410 | Sand and gravel crushing | |
| 5234 | Sand and gravel dealers, retail | |
| 6023 | Sand and gravel hauling | |
| 1410 | Sand and/or gravel pit | |
| 4540 | Sand blasting and painting (non-masonry surfaces) | |
| 4540 | Sand blasting building exteriors | |
| 2732 | Sand castings, aluminum, unfinished, manufacturing | |
| 2732 | Sand castings, copper, unfinished, manufacturing | |
| 2732 | Sand castings, non-ferrous metals (except aluminum, copper), unfinished, manufacturing | |
| 2732 | Sand castings, non-ferrous metals, unfinished, manufacturing | |
| 1410 | Sand grinding | |
| 6023 | Sand hauling, local | |
| 2924 | Sand mixers, manufacturing | |
| 1410 | Sand pit operating | |
| 1410 | Sand pit or quarry | |
| 1410 | Sand screening | |
| 1410 | Sand washing | |
| 1410 | Sand, abrasive, quarrying | |
| 5143 | Sand, construction, wholesale | |
| 5143 | Sand, gravel and cement, builders' supply, wholesale | |
| 1110 | Sand, oil, mining | |
| 1410 | Sand, quartz, mining | |
| 5143 | Sand, wholesale | |
| 1920 | Sandals, manufacturing | |
| 2892 | Sandblasting metals and metal products, for the trade | |
| 2922 | Sanders, hand held power-driven, manufacturing | |
| 2922 | Sanding machines, floor, manufacturing | |
| 2922 | Sanding machines, woodworking type, stationary, manufacturing | |
| 4540 | Sanding wood floors, construction | |
| 2695 | Sand-lime products (e.g., brick, blocks), manufacturing | |
| 2929 | Sandpaper making machinery, manufacturing | |
| 5234 | Sandpaper store, retail | |
| 2699 | Sandpaper, manufacturing | |
| 1410 | Sandstone (except bituminous), crushed and broken, quarrying | |