bones, coal, wood or tar or manufacture of any of their products; 6. Drop forges ; 7. Fat, grease, lard or tallow manufacturing, refining or rendering; 8. Flour mills or grist mills; 9. Hot rolling mills; 10.
Read it in the chapter →How this ordinance defines it
The operative definition is the local one. Codes routinely subdivide a category into tiers — “day care 2, family”, “group home 2” — and attach different permissions to each, so only Norton’s own text settles what this covers.