Agricultural chemicals, fertilizers or pesticides
| |
Cement
| |
Chemicals in bulk, explosives, fireworks, ammunition
or gunpowder
| |
Leather and oil cloth manufacturing
| |
Metal finishing, grinding, polishing, stamping
or heat treating of products and metal products manufacturing (as
opposed to fabrication)
| |
Paints, varnishes or enamel
| |
Petroleum or kerosene refining or distillation
| |
Plastics, polymers, resins or vinyl
| |
Rubber products (natural or synthetic) or tire
retreading
|